THEM: hello, i would like the books and the hat  YOU: that won't work i need the books and you can have the rest  THEM: i can't make that deal, balls aren't worth much to me. i'll need at least 1 book.  YOU: then i need two books and both balls  THEM: that won't work either. how about you get 2 books and 1 ball, i get 1 book, the hat, and 1 ball?  YOU: sounds good.