i need to find out if there s a train going to stansted airport that leaves after 12:30 .
{'service': 'train', 'act': 'inform', 'slot_name': 'depart', 'value': 'cambridge '} {'service': 'train', 'act': 'inform', 'slot_name': 'day', 'value': 'friday '} {'service': 'train', 'act': 'inform', 'slot_name': 'dest', 'value': 'stansted airpot'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '12:40'} {'service': 'train', 'act': 'request', 'slot_name': 'depart', 'value': '?'} {'service': 'train', 'act': 'request', 'slot_name': 'day', 'value': '?'}
we have a train leaving on friday by 12:40 from cambridge to stansted airport but we need to know your departure point and date of departure to serve you better