听力原文:W: Hello? I would like to speak to Mr. Lee. M: This is Lee speaking. W: This is Linda, your old friend. M: Oh, how are you, Linda? I'm glad you called. W: Mr. Smith wrote to me that you were coming to our city. May I see you at your hotel? M: Please hold on a moment. I have to check my schedule. Yes, that's all right. W: Great. I'll be there in half an hour. M: All right, I'll be expecting you. W: Oh, I almost forgot. What's your room number? M: It's the No. 311 on the second floor. Please call me if you can't find me. W: I'll do that. See you later. How does Linda know that Lee is at the city?