Hi, I'd like to book a taxi. Could you help me find a reasonable price?
I would be happy to help you with your request, could you be more specific on where you're departing from and on what day?
I'm sorry, I would actually like a restaurant in the centre that serves Afghan food. 
Unfortunately there are no restaurants in the centre that serve Afghan food. Would you like to look for one in other areas?
How about a Chinese restaurant?
There's ten chinese restaurants in the centre. Do you have a particular price range you'd like to stay in?
A cheap price range.
There are three restaurants that meet your requirements:  Charlie Chan, Rice House, and Golden House.  Does any of those sound interesting?
May I have the address for the Charlie Chan restaurant?
Yes, it's Regent Street City Centre, would you like to book it?
Yes, can you please book a table for four at 4pm.  
I'd be happy to reserve your table for you. What day will the reservation be for?
Can you book me for Tuesday please?
Charlie chan is booked for tuesday at 4pm
Great, I am also looking for a train from Stevenage into Cambridge. 
TR8306 leaves at 05:54
Do you have a train that leaves after 09:00 by chance?
TR2860 leaves at 09:54. Would you like to book your seats?
Not at this moment. Can you tell me the travel and arrival time?
The arrival time is 10:43 and the duration would be 49 minutes.
Thank you! That's all I needed today. Bye!
You are most welcome, have a nice day.