Task-oriented dialogue about: train

I need a train from London Kings Cross to Cambridge.
I can assist you with that. There are many options available to you leaving London Kings Cross arriving in Cambridge, what day and time would you prefer?
I want to leave on sunday, and I want to leave after 0930 am.
TR7147 departs at 11:17 would that work?
Yes. I need 3 tickets and the reference number.
Booked! Reference number is YV5PJQHU . You will pay 56.64 GBP at the station. Anything else you need?
Thanks, that's all I need. Have a nice day.
Okay thank you.