conversations.from: human
conversations.value: Dr. Harry wants to know how many candies Susan consumed during the week. Susan tells him she bought 3 on Tuesday, 5 on Thursday, 2 on Friday. If she has only 4 of them left, how many did she eat?
  What is the solution?
conversations.from: assistant
conversations.value: She had bought 3+5+2 = 10 candies over the week
  She has only 4 left which means she ate 10-4 = 6 candies during the week