conversations.from: human
conversations.value: I'm completely lost with this math problem: One necklace is worth $34. Bob decided to buy one for his wife. But, he also bought a book, which is $5 more expensive than the necklace. Before he went shopping, Bob set a limit and decided not to spend more than $70. How many dollars over the "limit" did Bob spend?
  Can you give me a hand?
conversations.from: assistant
conversations.value: The book is $5 more expensive than the necklace, which means the book costs 34 + 5 = $39.
  Both products which Bob wants to buy cost in total 39 + 34 = $73.
  So Bob will spend 73 - 70 = $3 over the limit.