dialogue: YOU: hey i really want the book and hat <eos> THEM: i need the book and 2 balls <eos> YOU: i need the hat and 2 balls . so how about the book and 1 ball for you ? <eos> THEM: hmmmm . deal <eos> YOU: <selection>
output: item0=0 item1=1 item2=2 item0=1 item1=0 item2=1