The passenger who's bag didn't fit in the overhead who quickly said "Ya know, THEY put you on these small planes....."
FA chimed in: "Who is THEY? Did someone else buy your ticket or did you?"
Lady, now completely confused: "I bought it"
FA: "So what are you complaining about? Why do you chose to fly on a small plane?"
Lady, in a sheepish voice: "It was the cheapest ticket"
Bullseye