听力原文:W: Are these your bags, sir? M: Yes, that is right. W: Have you anything to declare? M: No, I have only got clothes and things like that. W: What's the purpose of your visit? M: I'm here on business. W: I see. Would you mind opening this one, please? M: Not at. all, W: What is inside this package? M: Presents for some of my friends. They are glass vases and so on. W: Got any tobacco? M: I have got 200 cigarettes. W: Would you mind showing me your camera, please, sir? M: Not at all. W: I see, thank you, right. That's all. Thank yon. Where does the conversation most likely take place?