I'm trying to catch a flight from one UA hub to another to make a late afternoon connection. There are two flights I'm going to try, but are overbooked by -6 and have 10 people on the standby list.

Is it pretty common to have a UA mainline jumpseater going from one major hub to the other?

I was trying to JS a few weeks back and the gate agent said there was another UA mainline pilot in the JS...but it was a a320 with two jumpseats...she refused to believe there were two jumpseats and wouldn't help me. How can I avoid this tomorrow?