Please answer this: W: Sorry, sir. All the single rooms are occupied. But if you like, I can check with Imperial Hotel to see if they have any. What was said before this conversation?
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Answer: M: I wonder whether it would be possible to change this double room to two single rooms.
Problem: M: I need to find this specific magazine, and I am not sure where to look for. W: How old is the magazine? Is it a recent magazine less than a year old or is it an old magazine? M: You need to know how old the magazine is to find it? W: Yes, the more recent magazines are in the magazine reading room on the second floor, but after a year, magazines are tied together and kept on the third floor. M: Well, the magazine I want to find is more than a year old, so that means I need to go to the second floor. Oh,excuse me, what am I saying, the third floor. W: That's right, the third floor. M: Thank you for your help. What was said before this conversation?

A: W: Can I help you?
Problem: Given the question: W: If you have to be at the meeting by Friday morning, the train might be better. What was said before this conversation?
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The answer is:
M: I can't decide whether to take the bus or train to Beijing.
input question: M: I have a reservation for tonight. John Durgin. W: Just a moment, please. Let me check. That's right. You have a reservation for a two-room suite for tonight. M: I'm afraid there's been a mistake. I only reserve a single room, not a suite. W: I'm sorry, Mr. Durgin, but this is what is available. Your reservation arrived too late to have a single. There's a large conference in town this week and we're full up. M: Well, if that's the way it is, I'll have to take it. W: Please sign the register here. Your suite is 526. M: Thank you. W: The lift is on your right, sir, and I'll have your bags sent up in a moment. M: Fine, thanks. What was said before this conversation????
output answer: W: Yes, sir. May I help you?
M: I don't know. I dropped it two weeks ago, but it was working well until yesterday. It's seven years old, though. I think it was almost time to get a new one, anyway. What was said before this conversation?
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Answer: W: Well, your computer is broken. It won't turn on. How did you break it?
Q: M: Maybe we shall get a new coffee machine instead. What was said before this conversation?
A:
W: We ought to stop buying this kind of coffee. It always tastes terrible.