I need to book a train.
Where are you departing from, and what is your destination?
I'm at Bishops Stortford and would like to go to Cambridge. 
The travel time for that route is 38 minutes. What day would you be traveling?
I would like to travel this Wednesday and need to leave after 08:15.
There are 8 trains that leave after 8:15, did you have a specific arrival time in mind?
No, anytime after 8:15 is fine. Maybe the first train after that time. 
Okay I have the 9:29 that arrives at 10:07. Would you like to book that?
Yes, that works, I need the travel time, and the train ID please.
Sure, Train ID is TR9178 and travel time is 38 minutes.  How many tickets do you need?
I actually don't need to book right now. Sorry for the confusion.
OK, is that all you needed today, then?
Yes that's all the info I needed thank you!
You're quite welcome. Thanks for contacting the Cambridge TownInfo Centre and have a great day!