i need a train to cambridge and i need it to leave after 12:45 . i am leaving from peterborough and need to travel on tuesday .
there are 833 trains that meet your needs . would you like to narrow it down by departure station and and or day of travel ?
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': '23'} {'service': 'train', 'act': 'request', 'slot_name': 'arrive', 'value': '?'}
that narrows it down to 23 choices . what time were you wishing to arrive ?