input question: W: Excellent! I can't believe I just bought a house! When can I move in? M: The previous owners need to clean the house this weekend, but you can move in on Monday morning. Do you have the keys? W: No, I don't have the keys. Can I pick them up from your office tomorrow? M: My office isn't open on Fridays, but I can bring them to you this weekend. Do you have all the copies of these important papers? W: Yes. I have a question. Do you sell houses in Springfield, too? My friend wants to sell his house and I'd love to recommend you. M: Yes, I do. Thanks for the recommendation! What was said before this conversation????
output answer: M: OK, just sign your name right here on this line, and you'll officially own your house!

input question: M: I arrived here an hour ago. What was said before this conversation????
output answer: W: Excuse me, when did you arrive here, Mr. Wang?

input question: M: Good morning, Cathy. W: I want to have a dinner party to celebrate my birthday. Would you come? M: I'd love to, Cathy. What time? W: Next weekend, on Saturday. M: Saturday do you say? W: If that's all right with you. M: I'm afraid I'm busy then. I've already had plans. W: What about Sunday? M: I'm sure it will be all fight. W: Good, you'd better around 6:30 or 7:00, we'll heve time to chat a while. What was said before this conversation????
output answer: W: Good morning, Uncle Smith.

input question: F: OK, see you later. What was said before this conversation????
output answer:
M: I like to smoke when I am nervous, but let's meet at seven.