Task-oriented dialogue about: train

I am looking for train going to cambridge please.
Where are you planning to depart from?
I would like to leave from the birmingham new street station please. On a Saturday.
Okay, what time do you need to leave by?
I need to arrive by 16:45, departure is not as important.
How about TR3415 that arrives at 08:23?
you can book it please. get me the reference number too
Reference number is : PA6L738Y .
Thank you for your help
welcome. at your service next time
Sorry, I should have specified but the booking needs to be for 3 people
Booking was successful, the total fee is 180.24 GBP payable at the station for 3 tickets. Reference number is : 0UP7SB1H .
Perfect. Thank you so much! Have a great day!
You are quite welcome. Is there anything else I can assist you with today?
No that was all. Thanks
You're very welcome! Have a great day! Bye!