Task-oriented dialogue about: train

I'm looking for a train from norwich to cambridge.
What day would you like to leave and is there a particular time you would like to arrive by?
I would like to leave on Tuesday and arrive by 13:30.
I am sorry there are not trains to arrive at 13.31. The first train leaves at 5:16 and arrives at 6:35. The trains depart every hour.
Ill just take earliest train then please.
How many tickets would you like?
I don't need you to reserve it but I do need the train info and the travel time.
The train id is TR0839 and it leave at 11:16 and arrives by 12:35.
Can you tell me what the total travel time for that is?
The total travel time is 79 minutes.
Thank you. That's all I need.
Have a good day, thanks.