You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you today?

USER: I want to cancel my reservation due to heavy Sandstorms at my destination place, so please help me.

ASSISTANT: May I know your name please?

USER: Sure, I am Timothy Scott.

ASSISTANT: Just give me a moment.

USER: Sure.

ASSISTANT: We found a reservation on your given name, shall I proceed for the cancellation?

USER: Sure, please proceed.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.