conversations.from: human
conversations.value: John and Anna bought some eBook readers. John bought 15 eBook readers less than Anna did. Unfortunately, John lost 3 eBook readers. If Anna bought 50 eBook readers, how many eBook readers do they have altogether?
  Solve this problem.
conversations.from: assistant
conversations.value: John bought 50-15 = 35 eBook readers.
  John has 35-3 = 32 eBook readers after losing some.
  Together they have 50+32 = 82 eBook readers.