hello , i am looking to book a train that will be departing cambridge after 13:15 .
{'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'first '} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '15:00'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': ' every 51 minutes'}
the first train leaves at 15:00 and they run every 51 minutes .