I am looking for a restaurant in Cambridge that serves south indian food.
I am sorry there are no restaurants in the are that match that description. 
What kind of moderately-priced restaurants are there in the center of town, then?
We've got 21 moderately-priced restaurants in the centre. There are Asian Oriental, British, Chinese, European, Gastropub, International, Italian, Lebanese, Modern European, Spanish, and Turkish options. Do any of those interest you?
Good. I would like to try Asian Oriental then.
The Yippee noodle bar meets your criteria. Would you like me to book that for you?
No thanks.  How about a moderately priced modern European restaurant?
Hotel Du Vin and Bistro serves European food and is moderately priced. Does this sound good to you?
Yes, thank you. Will you please make a reservation at the restaurant for 3 people on Saturday at 15:15 and provide me with the reference number?
Sure thing! Your table is booked, and your reference number is SQ8N4IJX. Is there anything else I can assist you with today?
Yes please, could you find a hotel that offers free wifi in the same part of town as the restaurant? 
There are 5 options that fit your criteria.  Do you have a price range in mind or any other specifications?
No. I just need it to be for three people, for three nights. 
I am showing a total of five results that match your criteria.  May I suggest the four star Alexander Bed and Breakfast, located at 56 Saint Barnabas Road?
Actually, I need it to be a hotel, not a bed and breakfast. 
What about the Gonville Hotel? It is an expensive hotel in the centre of town.
That sounds good can you book it for 3 nights for 3 people on saturday?
Your booking is complete, reference number is AEDKGYBD. Anything else I can help you with?
I'm also looking for a taxi that arrives at the booked time of the restaurant.
Alright, I have a cab booked for you from the Gonville Hotel arriving at Hotel Du Vin and Bistro by 15:15. Anything else I can do for you?
Could I please get the car type and contact number of the taxi?
The car is a black audi and the contact number is 07306125704. Is there anything else I can help you with today?
No, I think that's all. You have been very helpful.
It has been my pleasure. Have a nice day.