Hello.
user
How may I serve you at this moment?
assistant
I made a reservation earlier this week to give a seminar, but my seminar has been postponed.
user
OK.
assistant
Can you aid me to change it?
user
Sure, please let me know your name to check your reservation?
assistant
Sure, my name is Dorothy Carter.
user
I regret that there is no reservation found on your name.
assistant
That's Ok, thanks for your information.
user
Thanks for approaching us, have a good day.
assistant