dialogue: YOU: id like the ball and the books . . . hats would be yours <eos> THEM: how about i get 3 hats and 2 books <eos> YOU: 3 hats and 1 book and we have a deal <eos> THEM: fine <eos> YOU: <selection>
output: item0=2 item1=0 item2=1 item0=1 item1=3 item2=0