As delivered this morning, when my United Airlines check-in was refused, and I was sent to work things out with USAir, which had arranged the flight:

1 "Don't give me attitude." (This was in response to my pointing out that, yes, as I'd said, I'd already done what she was telling me to do.)

2 "Good thing you got here early." Which I always try to do but am often mocked for. It took about half an hour to disabuse the computer of the notion that I had somehow canceled my return flight home or not made a connecting flight days earlier. (And I should say that the ticket agent did, indeed, solve the problem with the patience required to hang on hold with whoever necessary to resolve things.)

So lessons learned.