THEM: hi i need the hat and 1 ball  YOU: i need the ball and 2 books. i can offer you the hat and 1 book.  THEM: i can do hat and 2 books  YOU: i really need the ball and 2 books. i can not really move off those amounts.  THEM: i can take the hat and give you the rest?  YOU: ok, you get the hat, i get the rest. that works for me.