You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Brenda Evans.

ASSISTANT: How may I serve you?

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

ASSISTANT: Sure. Please wait for a moment. I will check for your flight reservation status. I have searched online but I could not find your flight reservation to cancel it.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.

USER: Welcome.