dialogue: THEM: give me the ball , two hats and your first born <eos> YOU: no deal <eos> THEM: the ball and two hats then <eos> YOU: i want the book and ball <eos> THEM: ok fine <eos> YOU: thx <eos> THEM: <selection>
output: item0=1 item1=0 item2=1 item0=0 item1=3 item2=0