answer: #Person2# is helping #Person1# finding a lost wallet. By recalling places they went earlier, #Person2# thinks #Person2# knows where the wallet is.
documents: #Person1#: Oh no. I can't find my wallet.
  #Person2#: Your wallet? How is that possible?
  #Person1#: Yes, at the movies I had paid for the popcorn and drinks. Did I leave it there?
  #Person2#: No, I don't think so because you gave me $10 for the hot dogs after the movies at that new hot dog place.
  #Person1#: After that, we went to the convenient store. You paid for the chocolate there.
  #Person2#: Yeah, and then I paid for the taxi ride back home. Right. I know where you left it.