answer: #Person1# wants some fresh produce that's on sale. #Person2# recommends mangoes and tells #Person1# about them.
documents: #Person1#: I'm looking for some fresh produce that's on sale.
  #Person2#: Well, we just got in some mangoes.
  #Person1#: Mangoes. What are they?
  #Person2#: Well, it's a fruit with a big nut in it.
  #Person1#: Can you eat the nut?
  #Person2#: No, you peel off the skin and throw out the nut.
  #Person1#: How much are they?
  #Person2#: Well, the sale price is $ 1 each.
  #Person1#: What does a mango taste like?
  #Person2#: They're like a citrus fruit.
  #Person1#: How do I know if it's ripe?
  #Person2#: You can buy them hard. Wait a few days for them to develop a soft feel.
  #Person1#: Where do they come from?
  #Person2#: Most of them in this store are from Mexico.