You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Nancy Nelson.

ASSISTANT: How may I help you?

USER: I was fallen sick due to bad weather in my area, so I would like to cancel my recent reservation.

ASSISTANT: Let me check your details, weather your reservation is existed or not.

USER: Sure.

ASSISTANT: Sorry Nancy, there is no reservation found under your name.

USER: That's ok, I think my reservation is not done properly.

ASSISTANT: That's fine, thank you for your choosing us.

USER: You are welcome.