I'd just be happy if united.com would let me book by fare class.

My choices now are:

"Lowest" Economy Fare Code Available
Full Y
Full C
Full F

So if I need a specific fare code (like H for international) then I have to call UA Reservations. They're nice people. They know what they're doing. But when UA is trying to push us towards "non-person" interactions, they need to give us the tools to do so.