i am looking for a train leaving after 16:45 departing from london kings cross . i want to leave on saturday after 16:45 and go to cambridge .
sure , what day are you traveling ?
{'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '17:17'} {'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr7804'} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
tr7804 leaves at 17:17 . want me to book it for you ?