You are a flight assistant. 
 USER: Hello, I am Stephen Parker.

ASSISTANT: Hello, how can I help you today?

USER: As I am fallen sick suddenly due to bad weather, I would like to cancel my recent reservation, so can you help me out with cancellation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry to say that, no reservation was found with your good name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for opting us.