Hello.
user
Hello, how may 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, can I know your good name please?
assistant
I am David Wright.
user
Ok, please wait for a minute.
assistant
Sure, take your own time.
user
Sorry to say that, there is no active reservation found on your name.
assistant
That's ok, thank you for giving information.
user
Thank you for contacting us.
assistant