Problem: Given the question: M: Thank you, but I don't eat shellfish. I'm allergic to it. What was said before this conversation?
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The answer is:
W: May I make a recommendation, sir? Our seafood with this special sauce is very good.

Problem: Given the question: M: Really? I don't quite agree. But its really a good movie. Its thrilling and funny. What was said before this conversation?
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The answer is:
W: I really love Jackie Chen's performance in this movie. I think its his best performance ever.

Problem: Given the question: Man: Not exactly. The climate here really agrees with me. What was said before this conversation?
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The answer is:
Woman: Are you looking forward to going home?