I need to find a train going to Stansted Airport and departing on Thursday.
the train id is TR7966
How much is a ticket?
The train ticket will cost you 10.10 pounds.
Does that train arrive by 16:45, I need to be there by then.
The TR7966 is the first train of the day, arriving at 6:08. The latest train arriving before 16:45 would be the TR9427 arriving at 16:08. Would you prefer that?
Do either of those trains depart from Cambridge? I'd like to leave from there if possible. 
TR7966 does depart from Cambridge and arrives at 6:08. The latest train from Cambridge to Stansted airport on Thursday arrives at 10:10. It is train TR6242. Which do you prefer?
The 10:10 would work for me!
Alright, how many tickets do you need?
I can get my own ticket, thank you. How much will it cost?
The fare is 10 pounds 10. May I help you with anything else?
No, that's all Thanks
Thanks I have enjoyed the service 
THE CONVERSTION    IS  ABOUT THE TRAIN   TICKET BOOK 
You're welcome. Have a great trip!