conversations.from: human
conversations.value: Luther made 12 pancakes for breakfast. His family has 8 people. How many more pancakes must he make for everyone to have a second pancake?
conversations.from: assistant
conversations.value: In order for everyone to have seconds, Luther must make 8 x 2 = 16 pancakes.
  Luther must make another 16 - 12 = 4 pancakes.