Where does this conversation probably take place?

W: Are you being served, sir? What can I do for you?
M: No, I’m trying to get this book renewed. You know, it’s so helpful that I can’t finish my research paper without it.

M: Helen told me that you had been on a diet. How much weight have you been lost?
W: Well, to start with, I weighed 150 pounds. The first two months I took off ten pounds, but then I gained back four over the holidays.