I am looking for a modern European restaurant in the moderate range.
I have three restaurants that meet your criteria - Restaurant Alimentum, De Luca Cucina and Bar, and Riverside Brasserie. Would you like to book a table at one of these?
Sure, you can choose. As long it's in the moderate price range and serves modern European food, can you tell me what area it is in please?
Certainly, how about riverside brasserie is in the moderate price range, serves modern European and it is in the Centre area. How many people shall I book it for?
Let me think on that, could you help me book a train?
could you be a little more specific please; what day do you want to leave, and when do you want to leave?
I'd like to leave after 13:45 on thursday from cambridge to stansted airport.
I found 10 trains, do you have any time you need to arrive by?
No, I just need to leave after 13:45. Give me which ever one is earliest.
The earliest one I have leaving is 14:40 and arriving at 15:08. Would you like me to book this for just one person?
Not at this time, no. I just needed the information, thank you. 
Can I assist you with anything else today?
That is everything. Thank you!
Excellent. Have a good day!