You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Please cancel my ticket, because my nephew's marriage was cancelled.

ASSISTANT: Sure. May I know your name?

USER: I am Richard Martinez.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, There is no reservation found on your name.

USER: Thanks for sharing the information.

ASSISTANT: Thank you.