i am planning a trip and could use some help with the trains . i would like to leave on tuesday departing from cambridge and arriving by 14:15 at london kings cross .
ok , what day , what time , and where to and from ?
{'service': 'train', 'act': 'inform', 'slot_name': 'arrive', 'value': '13:51'} {'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr0315 '} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
the tr0315 arrives at 13:51 . do you want to book that trip ?