To the Minute: How to Offer Customers Reliable Time Slots

05/08/2026
16:06

reading time : 2 min

Lucie Monnot

Content Marketing Manager

Whether they provide deliveries, installations or technical interventions, companies are finding it increasingly difficult to offer customers appointments several weeks in advance with time slots lasting half a day.

When same-hour delivery is becoming the standard in consumers’ minds, asking customers to block out more than two hours to wait for a technician, and even more so for a delivery driver, no longer seems acceptable, even when there is no objective emergency.

When an emergency occurs, the situation becomes even more complex.

The need to respond quickly, for contractual or risk-related reasons, disrupts previously planned activities and requires companies to notify customers as early as possible when their appointments need to be rescheduled.

As with the initial appointment booking process, this delicate task often falls to contact center agents. To position and reposition appointments in a way that is optimal for the organization and as satisfactory as possible for each customer, agents need visibility into:

the schedules of the relevant field workers, including delivery drivers, installers, maintenance technicians and inspectors;
constraints specific to the location and type of intervention, including access conditions, parking and duration;
the customer’s status and history;
ongoing operations and the estimated time of arrival, or ETA, for every appointment and intervention, so that customers can be kept informed.

It is clear that system integration, including appointment booking, activity planning, call and email management, customer relationship management and real-time vehicle tracking, is essential for combining operational efficiency, flexibility, punctuality and customer satisfaction.

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Automate request qualification and prioritization

The integration of telephony and IT is not new. However, the openness of modern systems and software through APIs enables much deeper levels of integration.

This makes it possible to create greater value than ever before by automating certain processes and maximizing the use of data.

The system implemented by our customer ENGIE Solutions to manage customer requests outside business hours is an excellent example.

To contact ENGIE Solutions, each customer has a single 0800 number associated with both the agency responsible for the installation and the customer category, which may be Premium, Standard or Automatic.

Each agency can therefore be contacted through three numbers, with each number determining an intervention deadline. For Premium customers, typically those with critical industrial installations, the deadline is less than one hour.

During business hours, the agency answers and handles all requests received through its three numbers.

Outside business hours, all calls from all agencies are routed to an external provider and handled differently depending on the number called.

Calls from Premium and Standard customers are routed to agents. Displaying the number called allows the agent handling the call to immediately identify the relevant agency.
Once the problem has been qualified and the level of urgency assessed, the agent creates the intervention request in the system.
The proposed intervention slots automatically take into account contractual terms, including service levels and intervention deadlines, the level of urgency and, at agency level, the workload of the on-call team.
The agent is responsible for informing the on-call team and, through the GSM integration of the technicians’ mobility tool, can ensure that the intervention is carried out on time and keep the customer informed.
Customers in the Automatic category are directed to an interactive voice response system, or IVR.
After entering their installation identification number, they can qualify and submit their intervention request without speaking to a human agent.

“During both business and non-business hours, all this incoming call management engineering is transparent to customers,” explains Patrick Hourqueig, Head of Tools and Methods and responsible for planning solutions at ENGIE Solutions.
“For customers, it is simple. They have one telephone number and one installation number. From an operational perspective, the most important key in the entire system is the installation number because it provides access to all the relevant information, including installation characteristics, contract type, intervention history and upcoming planned visits.”
The automatic consideration of all these parameters by Nomadia’s Opti-Time planning solution enables ENGIE Solutions to optimize emergency management while controlling its intervention deadlines and service-level commitments.

To learn more about how planning is organized at ENGIE Solutions, read Patrick Hourqueig’s interview.

Our solution : Nomadia Field Service

Nomadia Field Service

Do you have a specific scenario in mind for offering your customers precise intervention or delivery time slots?

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Involve customers in choosing their time slot

Fortunately for companies, not every on-site intervention and delivery is urgent.

The challenge is to find a time slot that suits the customer and that field teams can reliably meet.

The safest way to achieve this is to involve the customer in the choice of the time slot. Through your website or contact center, offer only dates and times that have been pre-optimized according to existing schedules.

Because the proposed time slots automatically take the customer’s geographic location and, where applicable, the intervention duration into account, they are operationally achievable for field teams.

Instead of imposing a date and time that is optimal for your organization but may not suit the customer, you give them a choice.

The simple fact that the customer makes the choice creates significantly greater psychological commitment.

The customer is also more likely to respect the agreed date and time when they receive:

Immediate appointment confirmation by email or text message. The message can include a link allowing the customer to add the appointment directly to their personal calendar.
Automatic appointment reminders sent at a frequency defined according to how far away the appointment date is. These reminders can also indicate whether rescheduling is possible and under what conditions.

Giving customers this option may seem counterintuitive, but rescheduling an appointment that a customer can no longer attend costs the company less than sending a technician or delivery driver to a location where no one is available.

On the day of the appointment, the customer receives a final notification indicating the field worker’s estimated time of arrival.

The notification may also allow the customer to track the field worker’s approach in real time, potentially preventing a number of calls to the contact center.

Finally, after the intervention, the automatic delivery of a satisfaction survey closes the loop and makes it possible to contact customers who were not fully satisfied quickly.

Nomadia’s planning and optimization solutions allow each company to implement the scenario best suited to its constraints, business model and customer requirements.

For example:

C Chez Vous, which manages Cdiscount’s home delivery of parcels weighing more than 30 kilograms, provides customers with an initial delivery timeframe when they place their order.
Every evening, the day’s orders are processed by the optimization engine, which creates the routes and then emails each customer a more precise delivery slot that they can modify.
At Allodiagnostic, a specialist in property diagnostics, the price of home services varies according to how far away the selected date is and how precise the customer’s chosen time slot is.
This is an effective and intelligent way to smooth workload while offering a tangible benefit to customers who are less impatient and less demanding.
Customers who choose an intervention one week after placing their order and make themselves available for the entire day to welcome the inspector can receive a discount of up to 35%.

Frequently Asked Questions

FAQ – The Most Frequently Asked Questions About Nomadia

Why Choose Nomadia?

As France’s leading publisher of Smart Mobility SaaS solutions, Nomadia supports more than 175,000 field professionals every day. Our solutions are easy to use, quick to deploy, and deliver significant and immediate return on investment.

Drawing on the expertise of both a software publisher-integrator and a consulting firm, Nomadia’s teams provide tailored support, from data consulting to the deployment of mobile devices. Finally, our technical support team is available 24/7 to assist you.

Who Are Nomadia Solutions Designed For?

Nomadia solutions support the digital transformation of all mobile professionals: field sales representatives, delivery drivers, technicians, auditors, healthcare workers, inspectors, service providers, security patrol officers, experts, and more.

Whether for SMEs or large enterprises, our solutions adapt to businesses of all sizes and across all industries.

How Much Does It Cost?

Nomadia Delivery offers transparent and flexible pricing, which primarily depends on the number of users (for example, planners and dispatchers) rather than a fixed cost per parcel.

Thanks to this model, you can control your delivery costs based on the number of resources (users) involved in route management, providing great flexibility to adjust your subscription according to the size of your fleet and your operational needs.

Is It Compatible with My Current ERP System?

Yes! Nomadia Delivery has been designed to integrate quickly and easily into your existing environment thanks to our powerful and secure APIs. Our solution is compatible with most ERP systems on the market. API integration enables the automatic synchronization of your transport orders, customer orders, and customer information, ensuring smooth and error-free delivery tracking. The solution also offers user-friendly import capabilities with data validation controls, as well as export options in multiple customizable formats.

Is It Suitable for Our Delivery Volume?

Yes, Nomadia Delivery is ideal for companies that manage a high volume of deliveries and want to optimize their routes, create balanced territories for their drivers, and ensure precise tracking of every parcel. Nomadia Delivery adapts to fleets of all sizes!

Can Multiple Warehouses or Depots Be Managed?

Yes, our solution allows you to manage multiple warehouses or depots. It centralizes data and optimizes routes or service operations for each of them.

Is There a Limit to the Number of Stops in Route Optimizations?

No, there is no strict limit to the number of stops in route optimizations. Our solution can handle large volumes of stops and quickly calculate optimized routes.

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