i need a train to bishops stortford that leaves after 16:30, please.
Where will you be travelling to?
I already told you.
Where will you be departing from and what day do you wish to travel?
I would like to leave on Tuesday, and depart from Cambridge.  
The TR2153 departs Cambridge for Bishops Stortford on Tuesday at 17:29, would  you like to book a seat on this train?
Yeah. I need to book for 7 people. 
Booking was successful, the total fee is 70.7 GBP payable at the station .
Reference number is : C2KPV8JC.
I also need a place to stay, I'd like possibly a guesthouse with free wifi.
Ok i will find you one as soon as possible and inform you thanks a lot