Hello.
user
Hello. How can I help you?
assistant
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
user
Sure, pleas help me with your name to check.
assistant
I am Patricia Turner.
user
Thank you. Please wait for a while, let me check your reservation status.
assistant
Sure.
user
We are regret to inform you that there is no active reservation on your name in our data.
assistant
That's ok, thank you for checking.
user
Thank you for choosing us.
assistant