Yeah, I need a train on Sunday.
I can certainly help with that. Where would you like to depart from?
Departing from Cambridge
Can you please tell me your destination?
The train should go to Bishops Stortford and leave after 14:45.
The first train after 14:45 TR3600 leaves at 15:29. Would you like to book the train?
Can you tell me the travel time first?
The first train leaves at 15:29 and arrives at 16:07, the duration is 38 minutes
That sounds great, that's all I wanted to know.
Can I help you find anything else, today?
That should be all. Thank you! 
Have a good rest of your day!