answer: #Person1# has never seen a sale machine and #Person2# teaches #Person1# how to use it to buy a drink.
documents: #Person1#: I've never seen a machine like this before and need some help.
  #Person2#: Sure, no problem. What are you trying to get?
  #Person1#: I want to buy a drink.
  #Person2#: OK. This machine needs you to use that change machine first to get correct change.
  #Person1#: I've got the correct change already.
  #Person2#: First you put your money in the dollar slot or the coin slot. The dollars have to be smooth.
  #Person1#: OK, what next?
  #Person2#: Just know that sometimes the money doesn't go in perfectly the first time and you have to try again.
  #Person1#: OK, next?
  #Person2#: Choose what you want and push the button. Sometimes it takes a couple of tries.
  #Person1#: I agree with you.
  #Person2#: Hope that works for you!