Task-oriented dialogue about: train

I need a train on Wednesday
Where are you departing from and where is your destination?
I will be departing from Cambridge. My destination is Birmingham New Street.
I've got lots of available trains that will get you there. Do you have a preferred time you want to leave or arrive?
I want to leave after 08:15, arrival isn't that important.
I have one leaving Cambridge at 9:01 and arriving in Birmingham at 11:44. Would you like to book this one?
Yes. Would you please provide me with the reference number?
I have booked you and your reference number is 93NZYRZQ .
Thank you so much.
Thank you for using our system!