dialogue: THEM: i would like the ball and book please <eos> YOU: i can give you the book and two hats , i need the rest <eos> THEM: i really want the ball and book <eos> YOU: i can't do that <eos> THEM: ok , how about the book and two hats <eos> YOU: the book and two hats for you ? <eos> THEM: <selection>
output: item0=0 item1=1 item2=1 item0=1 item1=2 item2=0