You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: John Young here.

ASSISTANT: How can I help you?

USER: Due to an emergency, I would like to cancel my reservation. Can you please help me for that?

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

USER: Anyway, thank you for the information.

ASSISTANT: Have a nice day and take care.