I have two restaurants that fit your criteria, Restaurant Two Two and Cote. Which can I book for you? No, those are both in the expensive price range. Are either of those acceptable?
D you know of any restaurants nearby that serve French cuisine? I don't mind paying a little extra for quality food and service, any recommendations are welcome. Are those both in the moderate price range? I require a moderately priced French restaurant in the center of town.
{"__type": "Inform", "entity": {"__type": "Restaurant", "price range": "expensive"}}
{"__type": "NotifyFailure", "service": "restaurant", "entity": {"__type": "Restaurant", "area": "centre of town"}}
I am sorry. There are no restaurants which meet that criteria in the centre of town. Would you like me to search for other options?