brian hsu: i love america. >> what's that? brian hsu: i love america. assault on an aircraft. or broken bones at a denver hospital where the flight diverted. hsu is out on a $10,000 bond and faces up to 20 years in prison it convicted. american airlines canceling another 250 flight on monday. many travelers are now concerned about how airlines are going to handle the upcoming holiday season. here is abc news reporter gio benitez. gio: in this morning's "gma" first look, cancellation chaos. >> my flight was delayed. we received text messages that the flight was canceled, and the lady at the desk disappeared. gio: she had to switch airports after her cancellation. >> i was surprised when they switched my airport. the lady at the desk, what i was originally trying to get my ticket fixed, said, "yeah, we just don't have any pilots." gio: with thanksgiving weekend three weeks away -- >> airlines have bitten off more than they can chew. when there's bad weather or something is occurs, they do not have enough crews available to fill in. gio: coming up at 7:00 a.m., we have the expert

according to court documents, brian hsu who was released on $10,000 bond said he recently had brain surgeryychological damage from an assault last year. he claims the flight attendant got aggressive after he bumped into her, but the flight attendant tells a different story saying hsu was the aggressor. the incident the latest case of unruly passengers plaguing air travel often over masks. a seattle man has been indicted accused of punching a flight attendant twice and trying to open the cockpit door during a flight from hawaii. he was fined more than $52,000. airlines also face mounting tensions from passengers frustrated with weather and staffing related cancellations. >> they didn't even offer an apology. she just said what do you want me to do? i said, i want my bag. >> reporter: american airlines canceling more than 2,000 flights since friday after bad weather at its hub in dallas. >> the lady at the desk when i was originally trying to get my ticket fixed told me we don't have any pilots. >> reporter: the problem may only get worse with holiday travel crowds and winter weather on the w