THEM: i would like the ball and the books please  YOU: give me the ball and hats and you could keep the books  THEM: no deal. i want the ball and at least 2 books  YOU: no, i want the two hats and the ball  THEM: no deal. i don't need hats  YOU: well then give me the ball and hats you could keep all 4 books  THEM: nope if you want the ball then i'll take the books and the hats  YOU: nope  THEM: best deal is you can have the ball and 1 hat  YOU: cool. then ball and one hat is fine with me and you could have one hat and 4 books  THEM: deal.