i would like a train to cambridge on friday
{'service': 'train', 'act': 'inform', 'slot_name': 'depart', 'value': 'london kings cross'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '05:17'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'}
i can get you a ticket that leaves london kings cross at 05:17 or do you need a later time than that ?