answer: #Person1# convinces #Person1#'s mom to buy the shoes.
documents: #Person1#: All right. But these are black and I don't like black shoes. They're dull.
  #Person2#: Well, black is a better color than pink. Pink's for girls.
  #Person1#: Then why are you wearing black shoes?
  #Person2#: Because. . . oh, all right. You win. Let's pay for them and go.
  #Person1#: Hey, thanks, mum.