You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Brandon Collins here.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: There is no reservation found under your name.

USER: No problem, thank you.

ASSISTANT: Thank you for contacting us.