dialogue: THEM: i want the hat and 2 books <eos> YOU: can i have the hat and the ball if you can have all the books ? <eos> THEM: i absolutely need the hat <eos> YOU: ok , i agree to your first offer then . <eos> THEM: <selection>
output: item0=1 item1=0 item2=1 item0=2 item1=1 item2=0