THEM: what would you like today?  YOU: i'll have the hats if you want the rest.  THEM: i need at least 1 hat  YOU: okay, can i have two hats and a ball?  THEM: then i am negative. i need 3 hats you have the rest or 1 hat and eveyrthing else  YOU: i'll take a book and two balls. you can have the hats.  THEM: deal.