I would like to book a train leaving Cambridge that goes to London Liverpool Street please.
There is a train which leaves every two hours between 5:59 and 13:59 that costs 16.60 pounds. The duration of the trip is 88 minutes.
I need to travel on Friday sometime after 13:45. Can you tell me whats available?
I have train TR4187 that leaves at 13:59 and arrives by 15:27 in london liverpool street. Would you like me to book that for you?
Great that's all the information I needed on the train.
Excellent! Can I help you with anything else today?
I also need to find a restaurant. Preferably one that serves Jamaican food. Can you find that for me?
Unfortunately there aren't any restaurants serving Jamaican food in the area, would you like to try another type of food?
What about one in the centre?
My apologies, there are none that serve Jamaican. Would you like to look for a different type of cuisine?
How about one that serves British food in the same area?
I have found several, how about this one? The Oak Bistro, price rang is moderate, phone is 01223323361, post code cb21eg, 6 Lensfield Road.
Can you please book for 4 on Friday at 10:45?
I was unable to book for that timeslot. Can you give me another timeslot to work with? 
How about 9:45?
Your table is reserved. Reference number 66TP23A1.
Thank you. That's all I needed.
You are welcome.  Enjoy your stay.  Bye.