THEM: i would like the book and ball, you can have the 4 hats  YOU: gonna be honest only way i can walk away from here and i assume not screw you is if i have the book and one hat, that gives me 5.  THEM: yeah i cant give up the book, your proposed deal would leave me with 3. i can give you the hats and the ball though.  YOU: well looks like we are both going to end with no deal  THEM: agreed.