I am looking for a train going to Cambridge. Can you help me? 
Sure. And on what day do you want to travel ?
I'll be leaving stansted airport anytime after 17:45 on thursday
The next flight after your desired time is at 18:24 on the TR5921 train. You would arrive by 18:52 at cambridge.
make reservation for 1 person and give me reference number
Your reference number is XZHNMJRS and it will cost 10.1 GBP.
Great. I also need a restaurant serving italian food.
We have quite a few good italian restaurants in Cambridge. Do you prefer a particular area or price range?
It should be in the south, whatever you recommend. I'll need a booking for 1 person at 20:15 on Thursday.
Would you like to try pizza express?
Yes, that will work. Please book a table for 1 person at 20/15 on Thursday.
Booked! The table will be reserved for 15 minutes.
Reference number: JO641TUZ.
Thank you very much.
enjoy your stay in Cambridge!