THEM: i'll take the hats and the ball.  YOU: i can not make that deal. if we can split the hats and i can take the books you can have the ball  THEM: how about i take the ball and 1 book and 1 hat.  YOU: i can not make that deal. the deal i stated is my final offer.  THEM: alright - we split the hats - you take the books - i take the ball.  YOU: okay great! thank you!