hey ! i am looking for a train from cambridge to stevenage . i need to travel on wednesday , and i need to arrive by 16:45 . the 15:21 sounds good . i think all i need will be the train id .
trains depart approximately every 2 hour -s . what time would you like to leave and arrive by ? i have found several trains that begin leaving at 5:21 until 15:21 to arrive by 16:45 . trains cost 12.80 pounds and are 49 minutes long . do you prefer early or later ?
{'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr7245'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '15:21'}
the train id for the 15:21 is tr7245 .