Travel agencies still like to use the frontend even though they're even less user friendly than VIM. This isn't the right time for it but once upon a time you

Travel agencies still like to use the frontend even though they're even less user friendly than VIM. This isn't the right time for it but once upon a time you could research what travel agencies use what GDS by the job requirements these agencies put out - usually you need like 5 years experience with Sabre/Apollo/whatever for any job here. Once your travel details are in the GDS then the airline clerks, car rental sales person, hotel clerks, and your travel agent can check out or update your travel info for you just based on the PNR number on your airline ticket for convenience if you're just not into that weird smartphone thing. You can change a bunch of things during the trip like what car you drive and hotel amenities during your stay so after the trip ends we download your trip from Sabre and build reports for your boss or whatever.