You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure. Please share your name to proceed further?

USER: My name is Susan Evans.

ASSISTANT: Susan Evans sorry, no reservation found as per your preferences.

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

ASSISTANT: Thank you.

USER: Welcome.