conversations.from: human
conversations.value: Explain how to solve this math problem: Mirasol had $50 in her account. She spent $10 on coffee beans and $30 on a tumbler. How much is left in her account?
conversations.from: assistant
conversations.value: Mirasol spent a total of $30 + $10 = $40.
  Thus, Mirasol has $50 - $40 = $10 left in her account.