conversations.from: human
conversations.value: Solve the following math problem: Donna cut her pizza into 12 slices and ate half for lunch.  She ate 1/3 of the remaining pizza for dinner.  How many slices are left for Donna's lunch tomorrow?
conversations.from: assistant
conversations.value: Her pizza has 12 slices and she ate 1/2 of the pizza for lunch so that leaves 12/2 = 6 slices left
  She eats 1/3 of the pizza for dinner, so she eats 1/3*6 = 2 slices
  She had 6 slices and ate 2 slices, so that leaves her with 6-2 = 4 slices for tomorrow's lunch