conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: A couple with two children, ages 6 and 10 years old, decided to go to an amusement park. The regular ticket costs $109, but children below 12 years old have a $5 discount. If they gave the cashier $500, how much change will they receive?
conversations.from: assistant
conversations.value: The ticket costs 109 - 5 = $104 for each child.
  So the ticket cost of the two children is 104 x 2 = $208.
  The couple needs to pay the regular price, so it's 109 x 2 = $218.
  Thus, the family needs to pay a total of 208 + 218 = $426.
  Therefore, their change is 500 - 426 = $74.