Context: Apparently another flight or two was cancelled and they were all placed on this one to DIA . Shoot . I wait in line at the service desk to see what they could do for me . I saw lots of people yelling and becoming irrational so I did what I always do and thank the person for being there and helping me out before I even talk to them about my situation .

Question: Why were people angry ?
Options:
0. The writer thanked the person for being there and helping .
1. None of the above choices .
2. They are irrational people .
3. A flight was cancelled
Answer: 3