because it's not like human travel agents don't exist today, just like human drivers exist today. Does having an AI book the tickets for you meaningfully change the things for you, the customer?
Of course it does. You don't think replacing humans in the full service travel industry wouldn't drive down costs and upgrade capabilities and experience could be a thing?
I want my ai to have as little financial incentive for itself and only maximize my needs. I'd pay for THAT.
In the end, you'll end up with Booking.com with extra steps:
"Perfect, ugh123! I've got just the hotel for you! It's the Marriott Grand Paradise, our top partner hotel. It is only 45 miles away from the specific address you requested and just barely $150 over budget per night, but they have a 4.9 rating, and with their Top Partner status, you earn 10 BookiePoints by booking there. Hurry, 33 people have booked a room there in the last hour! Do you confirm? Whoops, one more booking just now, only one room left! Do you want to save yours now?"