conversations.from: human
conversations.value: Solve the following math problem: Maria went on a trip to Belgium. She paid $300 for the ticket and half of that for the hotel. How much money does she have left, when she had $760 at the beginning?
conversations.from: assistant
conversations.value: For the hotel Maria paid 300 / 2 = $150.
  So Maria has 760 - 300 - 150 = $310 left.