input: Please answer the following: M: John has a black one and I have a green one. What was said before this conversation?
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output: W: I have a blue umbrella.

input: Please answer the following: W: Thank you for reminding me. What was said before this conversation?
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output: M: Here is your room key and the checkout time is 12 noon.

input: Please answer the following: W: She's to be called at seven. What was said before this conversation?
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output: M: When does the Swedish woman in Room 17 want to be called?

input: Please answer the following: W: I'm afraid you can't use it now. I am using it in 10 minutes. What was said before this conversation?
++++++++++
output:
M: Amy, could I use your bike?