what restaurant -s in the centre are cheap ?
{'service': 'restaurant', 'act': 'request', 'slot_name': 'food', 'value': '?'} {'service': 'restaurant', 'act': 'inform', 'slot_name': 'choice', 'value': '15 possible ones'}
i have 15 possible ones to choose from . could i ask what type of food you are looking for ?