You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brenda Harris here.

ASSISTANT: Harris, how can I assist you?

USER: Due to a sudden medical emergency, I couldn't attend my interview. Can you please cancel my reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok.

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

USER: That's fine. Thank you for your information.

ASSISTANT: Welcome.