You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Charles Edwards.

ASSISTANT: How can I help  you today?

USER: Owing for an emergency, I want to cancel my reservation. Can you do that for me?

ASSISTANT: Sure, I will help you with this. Please wait for a moment.

USER: Sure.

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

USER: Not an issue, anyway thank you for checking.

ASSISTANT: You are welcome.