Hi! I am looking for a train to Cambridge that leaves after 21:15.
TR1581 leaves at 21:17
Great! Can you please boo that for me?
Of course. I reserved 1 seat. The reference number is 87ZNT2V8.
Actually, I would need 2 tickets for that train. 
Okay. No problem. Your new booking and reservation number is  Y004877A.
Fantastic.  Can I also get information about Clare Hall?
Clare Hall is a college on the wet end. Would you like further information?
Yes, what is the entrance fee for Clare Hall?
Clare Hall has no entrance fee and is free! Do you need anything else?
No, that is all I need, thank you. Bye. 
Have a good day!