Hello.
user
Hello, how may I help you?
assistant
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
user
Sure, I will help you. May I know your name?
assistant
Samuel Campbell.
user
Thank you. Please wait for a while, let me check your reservation status.
assistant
Ok.
user
Sorry, no reservation found under your name in our database.
assistant
Not an issue, thank you for the information.
user
You are most welcome.
assistant