dialogue: YOU: give me ball and one hat <eos> THEM: i can give all three hats if i can have the ball and book <eos> YOU: i need ball , or no deal can be made <eos> THEM: ok , the ball for you and the rest for me ? <eos> YOU: yes <eos> THEM: deal <eos> YOU: <selection>
output: item0=0 item1=0 item2=1 item0=1 item1=3 item2=0