i would like to take a train from cambridge to leicester .
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'a number'} {'service': 'general', 'act': 'greet', 'slot_name': 'none', 'value': 'none'} {'service': 'train', 'act': 'request', 'slot_name': 'leave', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'day', 'value': '?'}
sure . i have a number of trains available . what day and time do you prefer ?