听力原文：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 ! Where does this conversation take place?