You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Alexander Carter. Owing to an emergency, I want to cancel my reservation. So please help me in cancellation.

ASSISTANT: Ok, please wait I will revert you.

USER: Sure.

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

USER: Not an issue. Thank you.

ASSISTANT: Thank you for availing us.