Problem: Given the question: W: Oh. It's not cheap but not very expensive. You can have a nice lunch for about $6.30. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: How are the restaurant prices here?

Problem: Given the question: W: Can I have your name, please? M: Sure. It's Taylor, t-a-y-l-o-r. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: I want to leave a message for Mr. Davis.

Problem: Given the question: W: Why not use mine, Tom? I won't ask you to pay. What was said before this conversation?
++++++++++++++++++++++++++++++++
The answer is:
M: Where is the closest telephone, Mary?