What’s the probable relationship between the two speakers?

W: Friendship Department Store, may I help you?
M: Yes, could you tell me when the store closes today?
W: We close at 7:30.
M: I see. And when do you open?
W: Nine o’clock every morning.
M: Fine. Thank you very much.

M: Janet, do you know anything about this author’s latest best seller?
W: Sure. I’ve just read through it. I strongly recommend it. I have a copy at home. If you want to read the book, I will bring it tomorrow.
M: Oh, you’re so kind. Thank you very much.