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.

W: Will you be joining us later in the basketball game?
M: No, thanks. I have to prepare for my tomorrow’s presentation.