answer: #Person2# tells #Person1# the mangoes are on sale today and then #Person2# introduces mangoes to #Person1# in detail.
documents: #Person1#: Can you tell me about some good deals on produce? 
  #Person2#: The mangoes are on sale today. 
  #Person1#: What exactly are mangoes? 
  #Person2#: They have yellowish red skin. It's a fruit with one big seed. 
  #Person1#: Is the seed edible? 
  #Person2#: Maybe if you were a parrot. I wouldn't recommend it. 
  #Person1#: How much does a mango cost? 
  #Person2#: Normally, they're $2 each. Today, they're only $1 each. 
  #Person1#: Maybe I won't like the taste. 
  #Person2#: It's hard to describe. They're sweet, but also sort of citrusy. 
  #Person1#: How do I tell the difference between a ripe one and an unripe one? 
  #Person2#: They're similar to an avocado. When the outside feels soft, they're ripe. 
  #Person1#: Where do most of them come from? 
  #Person2#: These are from Mexico.