You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am Charles Moore. I would like to cancel my reservation as I am not feeling well, can you please help me out?

ASSISTANT: I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for contacting us.