hello , i am trying to find a train that leaves from cambridge and arrives here by 13:45 today . can you help me book a ticket ?
{'service': 'train', 'act': 'inform', 'slot_name': 'arrive', 'value': '11:51'} {'service': 'train', 'act': 'request', 'slot_name': 'people', 'value': '?'}
the closest arrival time i can give you is 11:51 , is that ok ? and how many tickets would you like ?