To pick up the idea of office space: It’s common for bigger airports that airlines who operate there have own offices in the entrance hall. Passengers can usually book flights there, ask where their luggage is, just complain, etc. Maybe the airlines should just require office space of a certain size (should be small space, as those offices are not very big, normally) as part of the contract, as contract relationships progress. Some might even demand them from the very start of the contract relation.
There should not be certain “goals” to fulfill, like selling 1000 units in 4 days, but maybe, those offices could show if something went wrong. E.g. if your flight is delayed again, a lot of people would stand there and complain and maybe, you will get an angry e-mail from your business partner or have to pay fines.