Random Passenger: Excuse me this is my seat

Me: My boarding pass says it is mine, I have 2B and this seat is 2B

Random Passenger: But I always have 2B

Me: What does your boarding pass has on it:

Random Passenger: 4A

Me: In that case, 4A is your actual seat

Random Passenger: But I am a frequent flyer and I alway get given 2B

Me: I am an occasional flyer and I was given 2B and this is where I am sitting

Random Passenger: Why are you so difficult?

Me: I don’t know, maybe because you are so simple!