conversations.from: human
conversations.value: James bought a gallon of milk for $3, a bunch of bananas for $2, and paid 20% sales tax. How much money did James spend?
conversations.from: assistant
conversations.value: First add up James' purchases that is $3 + $2 = $5.
  So, the amount of sales tax is $5 * .2 = $1.
  Hence, James spent a total of $5 + $1 = $6.