Where does this conversation take place?

M: Excuse me! Do you mind if I sit here?
W: Not at all. Go ahead.
M: Thank you.
W: Are you going somewhere, or are you meeting someone?
M: I’m on my way to Washington. And you?
W: I’m on my way to San Francisco.
M: Really ? I think San Francisco is probably the most exciting city in the US.
W: So do I. No other city has as many good restaurants or as much good music.
M: En , neither do I, really. But small towns have their advantages, less traffic.
W: And friendlier people. You know, I’m beginning to feel homesick. By the way, where are you from?
M: China.
W: China? But you speak English like a native speaker. I didn’t have any idea.
M: Oh . Excuse me. It’s time for my flight. Well, nice talking with you.
W: You, too. Bye !