You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to cancel my recent reservation due to my scheduled examination dates has been postponed, so can you please help me with cancellation?

ASSISTANT: Sure. May I know your good name please?

USER: My name is Ryan Young.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Not a problem, thank you for the information.

ASSISTANT: Thanks for choosing us.