dialogue: THEM: i need the books and the hat you can have the balls <eos> YOU: i need the hat and at least one ball <eos> THEM: you can have the hat and 1 ball if i get the rest <eos> YOU: deal <eos> THEM: <selection>
output: item0=0 item1=1 item2=1 item0=2 item1=0 item2=2