answer: #Person1#'s happy that their new product made a record sale. #Person2# tells #Person1# about the research by the marketing department and the redesign work by the R & D center, and they both appreciate the advertisement for the new product.
documents: #Person1#: I am so happy to know that the promotion campaign for our new product is very successful. We just made a record sale this season.
  #Person2#: That is very encouraging news. I heard that the marketing department has done a three months research, they sent the feedback information to the research and development center by the end of every month. That is to say, the R & D center redesigned the product twice before it was launched into the market.
  #Person1#: It is not an easy job. How do you like the advertisement for the new product?
  #Person2#: That is the best one I have seen. I am sure our target customers, young people will love it.
  #Person1#: Certainly.