You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Patrick White here.

ASSISTANT: White, how can I assist you?

USER: I want to cancel my ticket due to dense fog in my hometown.

ASSISTANT: Sure, I will help you with that. Let me check your reservation status in our database.

USER: Sure.

ASSISTANT: White, I have not found any reservation on your name in our database.

USER: No problem, thank you.

ASSISTANT: You are welcome and thank you for choosing us.