THEM: hello i need the balls and the hat  YOU: i can give you one ball and the hat  THEM: that is not going to work for me. i am going to need both balls.  YOU: i can't give up both balls  THEM: neither can i  YOU: i can give you one ball, one hat, one book. that's the most i can give  THEM: i only need the two balls you can have the hat and both books  YOU: can't do it, no deal.