answer: #Person1# and #Person3# are buying television at #Person2#'s shop. #Person1# prefers the most expensive model and thinks it's worth the money, but #Person3# thinks it's too expensive.
documents: #Person1#: I like this television very much. How much does it cost? 
  #Person2#: It's the most expensive model in the shop. It costs five hundred pound. 
  #Person3#: That's too expensive for us. We can't afford all that money. 
  #Person2#: This model's less expensive than that one. It's only three hundred pound. But, of course, it's not as good as the expensive one. 
  #Person1#: I don't like this model. The other model's more expensive, but it's worth the money. Can we buy it on instalments? 
  #Person2#: Of course. You can pay a deposit of thirty pounds, and then forty pound a minth for three years. 
  #Person1#: Do you like it, dear? 
  #Person3#: I certainly do, but I don't like the price. you always want the best, but we can't afford it. Sometimes you think you're a millionaire! 
  #Person1#: Millionaires don't buy things on instalments !