dialogue: YOU: i'll take the book . you can have the rest . <eos> THEM: i really want the book ball and 1 hat <eos> YOU: i'll let you have the book and ball . but i'll need all the hats . <eos> THEM: can't i have 1 hat with the book & ball ? <eos> YOU: ok . <eos> THEM: <selection>
output: item0=0 item1=3 item2=0 item0=1 item1=1 item2=1