hi ! i need to find a cheap restaurant in the centre .
{'service': 'restaurant', 'act': 'request', 'slot_name': 'food', 'value': '?'} {'service': 'restaurant', 'act': 'inform', 'slot_name': 'food', 'value': 'cheap'} {'service': 'restaurant', 'act': 'inform', 'slot_name': 'choice', 'value': '15'} {'service': 'restaurant', 'act': 'inform', 'slot_name': 'area', 'value': 'centre'}
there are 15 restaurant -s in the centre that serve cheap food . what type of food do you want ?