i want to go to a particular attraction called great saint mary s church . what is the postcode ? no thank you . i also need a train that should leave on thursday and should go to cambridge .
sure ! great saint mary s church is in the centre . what information do you need ? the postcode for that church is cb23pq . would you like their phone number ?
{'service': 'train', 'act': 'request', 'slot_name': 'depart', 'value': '?'}
where will you be departing from ?