answer: #Person1# wants to buy some fresh products on sale. #Person2# recommends mangoes and introduces the fruit to #Person1#.
documents: #Person1#: Can you direct me to some fresh produce that's on sale? 
  #Person2#: Well, we've got some great mangoes on sale. 
  #Person1#: Mangoes? What are mangoes? 
  #Person2#: Well, it's a fruit with a big seed in it. 
  #Person1#: Can you eat the seed? 
  #Person2#: No. Peel the skin with a sharp knife, and throw out the seed. 
  #Person1#: Well, how much are they? 
  #Person2#: Well, they're on sale today for only $1 each. 
  #Person1#: Can you describe their taste? 
  #Person2#: They usually taste sweet, but they remind me of an orange. 
  #Person1#: How can I tell if they're ripe? 
  #Person2#: You can buy them either ripe or unripe. Unripe ones are hard. 
  #Person1#: Where do they grow mangoes? 
  #Person2#: The ones that are on sale are from Central America.