i need help finding a train for thursday . i would be leaving from cambridge going o peterborough . i just need to leave after 20:30 . as long as it leaves after 20:30 , then it s fine . can you give me the train id ? i'll buy at the station .
can you please tell me your departure and destination ? what time would like to leave or arrive ? what time would you like to arrive at your destination ? how about the last train , it'll get you there at 07:56 . how many tickets please ?
{'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr6688'}
the id is tr6688 .