Task-oriented dialogue about: train

I need a train leaving on Friday.
Where are you departing from and what is your destination?
The train should depart from cambridge and should go to ely.
Is there a particular time you'd like to leave?
I would like to leave on Friday and should arrive by 08:15.
Booking was successful, the total fee is 4.4 GBP payable at the station . Reference number is : 57E550PF .