Task-oriented dialogue about: train

I would like to take a train from leicester that arrives by 16:15.
The latest arrival time is 15:54.
I need the train to go to Cambridge and leave on Saturday.
The TR9488 leaves from leicester and arrives in cambridge at 06:54. Would you like a ticket?
I just need to know the price of the ticket and travel time between Leicester and Cambridge.
yes please book it for me and i need a confirmation number