There are not.
Are there any restaurants that serve New Zealand food? OK, can you find any Chinese restaurants in the town centre?
{"__type": "NotifyFailure", "service": "restaurant"}
{"__type": "Inform", "entity": {"__type": "Restaurant", "area": "city centre", "choice": "a number", "food": "Chinese", "price range": "expensive"}} {"__type": "Request", "service": "restaurant", "values": ["price range"]}
There are a number of Chinese restaurants in the city centre from cheap to expensive. Do you have a price range?