You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Owing to an  emergency, my sky diving has been cancelled.

ASSISTANT: Ok.

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure. May I know your name please?

USER: Thank you. This is John Hernandez.

ASSISTANT: Wait for a moment please.

USER: Ok.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you.