You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I am Brian Walker. Due to an emergency I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, Brian Walker, we are gleeful to help you. Please wait for a few seconds.

USER: Ok.

ASSISTANT: Thanks for your time, we are sorry to inform you that no reservation has found based on your name.

USER: Not a problem, thank you.

ASSISTANT: Thanks for availing our service, have a pleasant day.