dialogue: YOU: what would you like <eos> THEM: hello , may i have 3 hats and either 1 book or 1 ball ? <eos> YOU: ok three hats and one ball for you then <eos> THEM: deal , thank you . <eos> YOU: ok <eos> THEM: <selection>
output: item0=3 item1=0 item2=0 item0=0 item1=3 item2=1