A and b guest house is in the moderate price range.
I'd like to find a moderately priced guesthouse to stay at in cambridge. Maybe, if possible, I would like a guesthouse that is also 4 star in the east in addition to being moderate.
{"__type": "Inform", "entity": {"__type": "Hotel", "name": "A and b guest house", "price range": "moderate"}}
{"__type": "NotifyFailure", "service": "hotel", "entity": {"__type": "Hotel", "area": "east end of Cambridge", "stars": "four", "type": "guest houses"}}
I apologize, but there are no guest houses in Cambridge that are both four star and at the east end of Cambridge.