input question: F: Oh, you'd better put some milk in it. What was said before this conversation????
output answer: M: Would you like some coffee with sugar in it, Lily?

input question: M: Hi, Susan. Not so well as expected. I've left my position. I can't bear the rudeness of my boss any longer. W: What are you going to do then? M: No idea. Anyway, I've got to think about it seriously. And you? W: I've been very successful as a dancer. I like this kind of life. It is so exciting. M: You can't do it for ever. W: No, but I've decided to open a dance school once I've moved to the top. A lot of young dancers need better training, don't they? M: That's a wonderful idea. What was said before this conversation????
output answer: W: Hi, David. Haven't seen you for ages. How are you getting along with your work?

input question: M: I can't get a ticket to the football match tomorrow. W: Maybe I can help you. One of my friends wants to sell his ticket to that match. M: Really? Thank you very much. What was said before this conversation????
output answer: W: Hello, Kangkang, why are you unhappy?

input question: M: It's just down that road...I think. W: Look! There's a policeman! Ask him the way. M: All right. I'll go and ask him. W: (pause for 6 seconds) So,what did he say? M: Well, we have to walk down this road, take the first turning on the left. Then walk until we come to the river and... W: The river? M: Yes. It's over there, and there's a bridge. Across the bridge, we will be able to see some road signs which will tell us the way. W: But how far is it? How long does it take to walk there? M: About fifteen minutes, if we walk quickly. W: Fifteen minutes! We may be late for the train. And with these heavy bags, too! I think we ought to take a taxi. M: Not at this hour. Look at the traffic. It's moving very slowly. We can get there just as quickly on foot. W: Well, I can't possibly carry this bag any farther. M: All right. Let me take it, then. W: Don't be silly. You can't carry two bags at the same time. M: Yes, I can. The bags aren't that heavy...hmm! W: You see! They're heavier than you thought! M: Perhaps it's not such a bad idea after all. W: What isn't such a bad idea? What do you mean? M: Taxi! Taxi! What was said before this conversation????
output answer:
W: Why do we have to walk to the station? And where is it?