I can help you with that. Where would you be going and what day? Can you verify whether you are leaving from stansted airport or cambridge? The TR4227 train leaves at 14:24 would you like that one? The duration of that train is 28 minutes. There aren't any restaurants meeting those specifications. I'm afraid we don't have any restaurants in Cambridge that serve Afghan food. There are several expensive restaurants in the centre that serve other cuisines. Should we try one of those?
I need to take a train departing from stansted airport? I'd like to leave cambridge after 14:00 on Sunday. I need to leave from stansted airport to cambridge. Yes, may I get travel time in minutes? I am also looking for a restaurant that is expensive and serve afghan food. There isn't any afghan places in the centre? Are there any that serve Indian food, instead?
{"__type": "Inform", "entity": {"__type": "Restaurant", "area": "centre", "choice": "several", "price range": "expensive"}} {"__type": "NotifyFailure", "service": "restaurant", "entity": {"__type": "Restaurant", "area": "Cambridge", "food": "Afghan"}}
{"__type": "Inform", "entity": {"__type": "Restaurant", "choice": "6", "food": "indian", "name": "and Curry Queen", "price range": "expensive"}}
There are 6 restaurants in the centre that are expensive and serve indian food. Curry Garden, The Golden Curry, Saffron Brasserie, Panahar, Curry King, and Curry Queen.