I need to book a restaurant.
I'm happy to assist you. What type of cuisine would you like?
I would really love to try christmas food.
I'm sorry, I am not showing any restaurants serving Christmas food. Would you like to consider a different cuisine?
I would love italian food then.
We have 15 different Italian restaurants across town at different price ranges. Do you want to narrow down your choices?
No thank you. I'll just need a price range and postcode for one of them. 
pizza hut city centre is inthe cheap price range. their postcode is cb21ab
Thank you for the information, I also need a train on Wednesday from Cambridge.
Will you be travelling alone, and what is your destination? 
I would like to request information about a train to London Liverpool Street, I would like to leave after 9:15, when do I arrive and what is the price?
TR5874  arrives 11.27 and will cost 16.60 pounds	.is that it?
Yes that was all I needed to today.  Thank you goodbye.
Have a good day.