You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you at this moment?

USER: I would like to cancel my flight reservation as my trip got postponed, can you please help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name to check your reservation status?

USER: My name is Larry King.

ASSISTANT: Ok, please stand by, I will check check your reservation status and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform you that, we could not find any reservation against your name in our database.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for choosing us with a query.