i would like a train that is going by cambridge . kings lynn on thursday .
where would you be departing from ?
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'several'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': 'throughout the day'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'}
there are several trains leaving throughout the day . what is your departure time ?