THEM: i would like the 2 hats and the ball.  YOU: i need the 2 hats you can have the rest  THEM: no deal, you can have one hat and i'll have the other, plus the ball  YOU: i need both hats or i can't make a deal  THEM: no deal, the ball is not a good catch on its own  YOU: you can have the ball and the books  THEM: okay thanks.