THEM: i would like the book all the balls and one hat.  YOU: i would like both hats and two balls  THEM: how about you take both hats and i take the book and all balls.  YOU: how about i take the hats and one ball  THEM: how about you get a hat and the book and i get a hat and 3 balls.  YOU: how about i get one hat and the book and two balls  THEM: no way i could do you get both hats and a ball and i get two balls and the book.  YOU: ok  THEM: ok so you get the hats and a ball i get the book and 2 balls.