A、A shop assistant B、A telephone operator C、A waitress C

M: Can you tell me the title of this oil painting?
W: Sorry. I don’t know for sure. But I guess it’s an early 18th century work. Let me look it up in the catalog.
Q: Where does this conversation most probably take place?

M: How about the food I ordered? I’ve been waiting for twenty minutes already.
W: I’m very sorry, sir. I’ll be back with your order in a minute.
Q: What’s the woman’s job?