Hello.
user
Hello, how can I assist you today?
assistant
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
user
Sure, I can help you with that. May I know your good name please?
assistant
I am Sharon Wilson.
user
Ok, please wait for a while.
assistant
Sure.
user
Sharon Wilson, there is no active reservation found under your name to do cancellation.
assistant
That's ok, thank you for checking.
user
Thank you for choosing us, have a nice day.
assistant