Hello.
user
Hello, how may 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 good name?
assistant
I am Michael Martin.
user
Ok, please wait for a minute.
assistant
Sure.
user
Sorry to say that, there is no active reservation found on your name.
assistant
That's ok, thank you for checking.
user
Thank you for availing us.
assistant