You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Owing to an emergency, I would like to cancel my recent reservation.

ASSISTANT: Sure, may I know your name please?

USER: My name is Jonathan Miller.

ASSISTANT: Sorry, no reservation is found with your name to cancel further.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you.