<human>: Can you give me the gist of the text in a nutshell?

Everything started going downhill around 6:15am when we tried to check in for our flight. We were told that the itinerary had changed from an 8:40 departure to 8:07, and that the new flight would be operated by United instead of US Air. No big deal... We have plenty of time, but we have to go check in with United now. 

And so we try to check in. 

That doesn't go so well. One of the tickets is somehow coded incorrectly, and the person from United who is "helping" us doesn't know how to fix it so she sends us to someone else. We end up waiting in line, and by the time this guy gets everything sorted out, it's too late to get on the flight, and the best thing this marvel could do is put us on the same flight for tomorrow and suggests that we go back to talk with US Air. 

By this time, obviously everyone is more or less irate, but we head back to US Air to see what can be done. Turns out they can get us on the next flight which would allow us to make our connection and be on our way. Not sure why United was so incompetent,  but, whatever. 

Still, things can't be so easy. The flight is delayed. We fly off,  hoping to make it in time for our connection, and we end up landing with less than 5 minutes to make it. 

And we do!  Sort of. We get there just in time for Claudia to close the door to the gate in our faces and refuse to let us on the plane. Several of my family members are in the plane who had come from other places, but she doesn't care. To add more insult, we find out from someone who was flying standby that she had placed a group of US Air employees in seats just before we arrived at the gate. 

Now we're spending a night in Charlotte instead of joining a family reunion.
<bot>: Claudia from US Air gave away our seats to her coworkers and refused to let us on the flight we had tickets for.