dialogue: THEM: hello , i would like the hat and ball and am willing to give you the books in return <eos> YOU: not possible i need the hat or no deal <eos> THEM: okay you can have the hat but i want the 4 books then <eos> YOU: i get the hat and the ball ? <eos> THEM: just the hat <eos> YOU: i need another item <eos> THEM: how about 1 book <eos> YOU: sounds good <eos> THEM: <selection>
output: item0=1 item1=1 item2=0 item0=3 item1=0 item2=1