dialogue: THEM: i'd like ball and 1 book . <eos> YOU: how about 1 ball ? <eos> THEM: hats are worthless to me . i have to have a ball and a book . <eos> YOU: okay just one book and 1 ball then <eos> THEM: <selection>
output: item0=1 item1=3 item2=0 item0=1 item1=0 item2=1