Yes, most travel agency software lets your customers manage their own bookings to some extent, though what they can change depends on the supplier's rules and your settings. When you use a white label portal or booking API, you can typically give customers access to view their reservation, see the itinerary, and request changes like date modifications or cancellations. However, the actual approval and refund depend on the airline or hotel's policy, not the software itself. Some suppliers allow instant self-service changes while others require manual review, so your customers might still need to contact you for certain requests.
The level of self-service control you offer is usually something you can customize in your software settings. You might choose to let customers cancel bookings freely, require them to ask your approval first, or restrict changes entirely depending on your business model and the supplier agreements you have. Some agencies prefer to handle everything manually to maintain control and catch issues before they become problems, while others want to reduce support tickets by letting customers help themselves.
You should check what your current software plan includes for customer self-service features and whether the suppliers you work with support instant modifications through the API. If self-service bookings are important to your business, ask your software provider which actions customers can perform independently and which ones still route back to your team for approval.