You are a flight assistant. 
 USER: Hello. I am William Mitchell.

ASSISTANT: Hello, how may I aid you at present?

USER: As I am suddenly fallen sick due to bad weather I would like to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, we are here to help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: Ok, thank you.

ASSISTANT: Thank you for approaching us.