A: Good norming, ma'am. May I help you? B: I'm Lily Black, in Room 502. Can you change another room for me? It's too noisy. A: I'm sorry for the noise. I'll make the arrangement for you. B: Great, I hope you can find me a quiet room. A: Let me check. Could you move to room 507? B: Where is it? A: It is at the end of the corridor on the fourth floor. The bellman will help you. B: That's so nice. Thank you. A: I'm sorry for the trouble. B: It's OK.