answer: #Person2# is assisting #Person1# in buying a bottle of Centrum and toothbrushes and #Person1# asks if toothbrushes are cheaper.
documents: #Person1#: I'd like to buy a bottle of Centrum, a tooth brushes.
  #Person2#: Centrum? We have bottles of thirty and one hundred tablets. Which kind do you want?
  #Person1#: Give me one bottle of thirty tablets.
  #Person2#: And what kind of toothbrushes would you like?
  #Person1#: Can I have a look at them?
  #Person2#: Sure. This brand is supposed to be very good, but they're expensive. Those are new products. They come in several colors and sizes. There is also hard, soft, and medium.
  #Person1#: Are they cheaper?
  #Person2#: This one is 5 % off. That one has no reduction, but you can get a free tube of toothpaste with six toothbrushes.