THEM: i would like the hats and 2 balls please  YOU: let me have 3 balls a hat and the book  THEM: that isn't a fair deal at all. you can have the book.  YOU: no way, i need much more than the book  THEM: if you get the book, i want both hats  YOU: and i can have the balls too?  THEM: i need at least 1 ball  YOU: ok deal.