conversations.from: human
conversations.value: Can you guide me through solving this problem: Zach rented a car for $150 plus 50 cents for each mile. He drove 620 miles on Monday and another 744 miles on Thursday. How much did he spend?
conversations.from: assistant
conversations.value: On Monday Zach spent 620*0.5 = 310 dollars on miles.
  On Thursday Zach spent 744*0.5 = 372 dollars on miles.
  In total, Zach spent 150+310+372 = 832 dollars.