i need a train departing from cambridge , leaving after 21:30 . i need to go to peterborough on tuesday please
what time were you looking to arrive and what is your destination ?
{'service': 'train', 'act': 'inform', 'slot_name': 'arrive', 'value': '22:24'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '21:34'} {'service': 'train', 'act': 'inform', 'slot_name': 'dest', 'value': 'peterborough '} {'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr7663 '} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
the tr7663 departs at 21:34 and arrives in peterborough at 22:24 . shall i book this for you ?