THEM: hello there. is there any item that you really want badly?  YOU: i'm going to need the balls. i can give you the hat and book.  THEM: i don't really care for the hat. i'll give you two balls if i can get the book too.  YOU: how about the hat and 3 balls for me.  THEM: i can do the hat, and two, probably not much more than that.  YOU: okay. i'll take the hat and two balls.  THEM: deal. take care.