Originally Posted by Xandrios

Ideally, you'd have the option to create one booking reference (e.g. Amadeus), and add your flights, hotels etc to that booking - reserving them in the process. And pay the full balance, and fully commit to the full itinerary, at the end - at once. Kind of like a database transaction, where you commit all changes at the end (or rollback all changes if there is an issue at any step). But unfortunately our travel industry is not set up for that yet, at least not for people not working with/for a TA.