Task-oriented dialogue about: train

I want to book an evening train from Bishops Strotford to Cambridge.
Certainly, there are lots of trains available. Which day would you like to travel?
Sunday please. I'd like to leave after 16:30.
Train TR5298 leaves at Bishops Strotford at 17:29 and arrives in Cambridge at 18:07. Would you like to book this trip?
Yes, let's book it for four, please. May I have a reference number?
Alright, I've got 4 tickets booked leaving at 17:29. Your reference number is ZIHX30RA .
Thank you. That is all I need today.
Okay. Glad I could help you today. Enjoy your journey.