A、To book a table for lunch. B、To book an air ticket. C、To make an appointment. D、To ask somebody for help. AWhy does the man us

W: Welcome, Mc Johnson. Take a seat, please. Our manager will be back soon.
M: Thank you. Urn, it’s rather warm these days, isn’t it?
W: Yes. The weather is quite unusual at this time of year.
M: You’re right. Er...do you mind if I take off my jacket then?
W: Sure. Make yourself at home.
M: Thank you, that’s better. Urn...do you mind if I smoke? I notice nobody’s smoking around here.
W: Well, I’m sorry, but this is a non-smoking Office building.
M: Oh, that’s OK. I’m trying to quit it anyway. By the way, may I use your phone to book a table for lunch?
W: Yeah. Sure. Do you know which restaurant is good?
M: Oh, yeah, absolutely.
W: Fine. The phone is over there.
M: Thank you.