What prompted this conversation?

M: I don’t understand. I got a ticket on my ear.
W: Unhuh. Well, are you a student of the university?
M: Yes.
W: And did you buy a parking permit?
M: I certainly did and I was parked in a student parking area. The one behind the Student Union.
W: I see. Let me look it up, then. What’s your student ID number?
M: 972-38-4401.
W: Mr. Warren?
M: That’s right.
W: Yes, your parking permit is current. Let me see your ticket.
M: Here it is.
W: Oh. But this ticket is for a 1994 blue Ford and we show your permit for a 1990 red Chevrolet.
M: My car was in the shop so I drove my cousin’s car.
W: That’s the problem, then. Your parking permit is good for your car only. When you have to use a different car, you should get a temporary permit here at Campus Police before you use one of the student lots. Otherwise, just park in a visitor’s Space.
M: And how much do they cost?
W: They are free to students who have regular permits. In the meantime, I’m afraid I’ll have to charge you the ten-dollar fine.