"I said I wanted my seat, that I had paid a lot of miles for that seat, and that it was United's responsibility to undo the seat assignment and return it to me, the person who had paid for it," she wrote.

The United agent offered Simon a $300 voucher or told her she could buy a seat on a flight with a different airline. "I said I wanted $500 and a free meal. He said, 'And I want a Mercedes Benz, but that's not going to happen,'" she said.

Simon said she was the last passenger on the plane and that a Texas congressman sat down next to her. He allegedly told Simon that Jackson Lee "regularly does this" and that this was the third time he had witnessed her bump a passenger. He allegedly added: "Jackson Lee gives us all a bad name; it's shameful."