Well, I am coming to Cambridge and was hoping to try some local restaurants.  Can you help me with my choices?
Yes, I can help you with that! What type of food would you like to eat and what is your price range?
I need something expensive please preferably in the North.
If you like European food, I'd recommend City Stop Restaurant.
I'll give that a try. Book a table for 6 people for Sunday at 12:30 please.
Thank you.  I have booked you a table for six on Sunday at 12:30 at City Stop Restaurant, and your reference number is CAWRD4D1.
Thank you. I also need a train the same day. 
Ok, let's narrow this down a bit.  Where would you like to depart from and where are you going?
I am departing from Peterborough and going to Cambridge.
Did you have an arrival or departure time in mind?
I want ot get in by 8:00, I need to get in in plenty of time for my Sunday booking.
The TR7721 would work for you, do you need a booking?
Yes, I need 6 tickets and the reference number of the booking.
Booking was successful, the total fee is 79.19 GBP payable at the station .Reference number is : 8M72FMPK.
Thanks you, that is everything, you helped me a lot.  Thanks a bunch!!
Thanks for contacting us, have a pleasant stay!