can you help me find a train leaving on sunday and arriving by 18:15 ? i am going from cambridge to standsted airport .
where are you departing from and what is your destination ?
{'service': 'train', 'act': 'inform', 'slot_name': 'arrive', 'value': '18:08'} {'service': 'train', 'act': 'inform', 'slot_name': 'leave', 'value': '17:40'} {'service': 'train', 'act': 'inform', 'slot_name': 'id', 'value': 'tr1526'} {'service': 'train', 'act': 'offerbook', 'slot_name': 'none', 'value': 'none'}
train tr1526 leaves 17:40 and will get you there by 18:08 . would you like some tickets ?