You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Ok, could you please provide me with your name for further process?

USER: Sure, my name is Andrew Walker.

ASSISTANT: Please wait for a mean while to check for the availability.

USER: Ok.

ASSISTANT: Sorry Walker, there is no reservation found as per your name to cancel any reservation.

USER: That's ok, thank you.

ASSISTANT: You are welcome.