Hello.
user
Hello, how can I help you today?
assistant
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
user
Sure, may I know your name?
assistant
I am Jack Martin.
user
Please wait a moment.
assistant
Sure.
user
Sorry to say, no reservation found with your name.
assistant
That's ok, thank you for giving information.
user
Thanks for reaching us.
assistant