THEM: i need both books and a hat  YOU: i need the ball, one hat, and one book.  THEM: can't do that, alas. i can maybe do both hats and a book  YOU: nope, that'd leave me at 5 / 10 and i can't deal for that.  THEM: then no deal : /  YOU: no deal  THEM: no deal  YOU: no deal  THEM: nd  YOU: no deal.