conversations.from: human
conversations.value: Charlotte needs to know how much money to have with her when she goes to the shoe store. How much money should Charlotte bring to buy a pair of boots, if the original price is $90 and there is a discount of 20%?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: The amount of the discount is 20/100 * $90 original price = $18
  Charlotte needs to bring the $90 - $18 discount = $72