answer: #Person2# and #Person1# will shop at Riverside Mall because there's a big sale. They plan to buy a bike for Tim's birthday.
documents: #Person1#: There's a big sale on clothes and sporting goods at Riverside Mall. 
  #Person2#: Sporting goods? Is that bike Tim wanted on sale? 
  #Person1#: Yeah, it's 30 percent off the regular price. 
  #Person2#: Well, maybe we could get it now and hide it until his birthday. 
  #Person1#: Yeah, it's a couple weeks away, and we don't have anything yet. 
  #Person2#: Don't buy him underwear again. He hates that. 
  #Person1#: I know, I know, but if I didn't buy it for him, he'd never buy it. 
  #Person2#: See anything else we need there? 
  #Person1#: Well, all shoes are 20 percent off. 
  #Person2#: Shoes? You already have a closet full of shoes. 
  #Person1#: I know, but another pair can't hurt. 
  #Person2#: Oh, all right. I need some new shirts, too. Let's go after breakfast.