I'm looking for an expensive restaurant in the centre. Thank you. 
There are several restaurants in the price range what type of food would you like to eat? 
The type of food is not important, but I would like a nice place that has tables available on Saturday evening.
Sure, I would recommend the Midsummer House Resaurant which serves British food.  It is a nice, expensive place located in the Centre. 
Great I would like to make a booking for 21 person on a Saturday for 18:45.
I'd be happy to help with your request, could you please verify the number of people in your party?
just for one person. i'm a sad and lonely person. do you want to join me for dinner??
I have booked you at the midsummer house restaurant, your reference number is ZNN1RQ7E. You will have a great time, and I'm sure meet lovely people.  Enjoy!   
I also need a train departing from cambridge leaving on sunday.
i got 5 trains on that day. what time do you need to arrive?
I would like to arrive by 15:00. 
There are 99 trains leaving Cambridge Sunday. What is your destination? 
I need it to go to bishops stortford and should arrive by 15:00.
TR2402 arrives at 14:07. Want to book?
Yes can you book that for 1 person as well?
Yes.  There is a train that leaves at 13:29 and arrives at 14:07, would you like to book this train?
Yes, that would be great. It will be only one person. 
Booking was successful, the total fee is 8.08 GBP payable at the station .
Reference number is : TZXLECBZ. Can I help you with anything else today?
Nope, that's it for me today. Thanks a lot. 
Have a nice day and enjoy your stay in cambridge