THEM: give me hat and book  YOU: i can give you the book and 2 balls.  THEM: i need hat and 2 balls  YOU: that does not work for me, hat and book for me  THEM: ok, no deal  YOU: sorry that it not worked for us.  THEM: me too  YOU: how about i give you 2 balls and the book  THEM: i need hat  YOU: the hat is the only thing usefull there  THEM: whahoo no deal.