input question: M: Yes, I got a letter from her yesterday. She said she enjoyed her visit to New York very much. What was said before this conversation????
output answer: F: Have you heard from your sister yet?

input question: M: No, I didn't. My friend gave me a fide to town. What was said before this conversation????
output answer: W: You missed your train today,didn't you?

input question: M: With pleasure. What was said before this conversation????
output answer: F: Would you please take care of my cat while I'm away?

input question: M: In an hour. W: Can you come much earlier? What was said before this conversation????
output answer:
W: When will you be back?