You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Sure, may I know your name to check further?

USER: My name is Patrick Hall.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Your reservation is successfully cancelled.

USER: Thank you.

ASSISTANT: Thank you for contacting us.