i am looking for cheap place -s to eat in the centre of the city .
{'service': 'restaurant', 'act': 'request', 'slot_name': 'food', 'value': '?'} {'service': 'restaurant', 'act': 'inform', 'slot_name': 'price', 'value': 'cheap '} {'service': 'restaurant', 'act': 'inform', 'slot_name': 'choice', 'value': 'fifteen '}
okay , there are fifteen restaurant -s in that area within the cheap price range . do you have a preference on the cuisine that is served ?