conversations.from: human
conversations.value: Provide a step by step solution for the following math problem: Noemi lost $400 on roulette and $500 on blackjack. How much money did Noemi begin with if she still had $800 in her purse?
conversations.from: assistant
conversations.value: The total amount of money that she lost is $400+$500 = $900
  If she remained with $900, she initially had $900+$800 = $1700