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 .
trains depart approximately every 2 hour -s . what time would you like to leave and arrive by ?
{'service': 'train', 'act': 'inform', 'slot_name': 'time', 'value': '49 minutes long'} {'service': 'train', 'act': 'inform', 'slot_name': 'arrive', 'value': '16:45'} {'service': 'train', 'act': 'inform', 'slot_name': 'choice', 'value': 'several '} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '5:21 until 15:21'} {'service': 'train', 'act': 'inform', 'slot_name': 'ticket', 'value': '12.80 pounds'} {'service': 'train', 'act': 'select', 'slot_name': 'choice', 'value': 'early'} {'service': 'train', 'act': 'select', 'slot_name': 'choice', 'value': ' later'}
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 ?