dialogue: YOU: i would like one of each please <eos> THEM: i will give all hats for the ball <eos> YOU: i really like the ball <eos> THEM: you can have the books too <eos> YOU: ok , i'll take all of the books and hats and you can have the ball <eos> THEM: <selection>
output: item0=3 item1=2 item2=0 item0=0 item1=0 item2=1