dialogue: YOU: i'd like hat and 2 books . <eos> THEM: if i can have the hat and ball you can have all four books . <eos> YOU: i have to have the hat . it's 6 points for me . <eos> THEM: ball and three books for me then . <eos> YOU: deal . <eos> THEM: <selection>
output: item0=1 item1=1 item2=0 item0=3 item1=0 item2=1