Hello.
user
Hello. How may I assist you?
assistant
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
user
Sure, I am here to help you. May I know your name please?
assistant
I am Ashley Davis.
user
Please wait a moment.
assistant
Sure.
user
Ashley Davis, no reservation has been found on your name in our records.
assistant
That's ok, thank you for giving information.
user
Thank you for choosing us.
assistant