conversations.from: human
conversations.value: A newspaper subscription costs $10/month. If you purchase an annual subscription you obtain a 20% discount on your total bill. How much do you end up paying if you go with the annual subscription?
conversations.from: assistant
conversations.value: A year has 12 months. If 1 month costs $10, then a year will cost $12 * 10 = $120 per year without an annual subscription
  If the annual subscription has a 20% discount then you would pay $120 * (1-20%) = $96 for the annual subscription