The only problem with most of the flights I book now is that they're with low cost airlines and packed with dark patterns designed to push upgrades.
Would an AI salesman be any better though? At least the website can't actively try to pursuade me to upgrade.
An actually useful agent is something that is totally doable with technologies even from a decade ago, which you by necessity need to host yourself, with a sizeable amount of DIY and duct tape, since it won’t be allowed to exist as a hosted product. The purveyor of goods and services cannot bargain with it so it puts useless junk into your shopping cart on impulse. You cannot really upsell it, all the ad impressions are lost on it, and you cannot phish it with ad buttons that look like the UI of your site — it goes in with the sole purpose to make your bookings/arrangements, it’s a quick in-and-out. It, by its very definition and design, is very adversarial to how most companies with Internet presences run things.
It doesn't have to be this way. Even before the pandemic I remember some companies simply gave me access to an internal app to choose flights where the only flights shown are these of the right date, right airport, and right price.