dialogue: THEM: can i get both basketballs and the book ? <eos> YOU: i need the book , but both basketballs is fine <eos> THEM: can i take both basketballs and 2 hats ? <eos> YOU: sure ! <eos> THEM: <selection>
output: item0=1 item1=1 item2=0 item0=0 item1=2 item2=2