i am looking for a train to peterborough . i am looking to go from cambridge to peterborough and leave after 14:15
ok , and what day and time are you looking for ?
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': '133'} {'service': 'train', 'act': 'request', 'slot_name': 'day', 'value': '?'}
there are 133 trains making that trip , do you have a day you prefer ?