You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicholas Allen.

ASSISTANT: I hope you are good today, how can I help you?

USER: As I have fallen sick suddenly due to bad weather, I would like to cancel my recent reservation. Can you please cancel my recent reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a while, I will check and inform you.

USER: Sure, I will wait for your reply.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: That's fine. Thank you for your information.

ASSISTANT: Thank you for opting us. Have a nice day.