You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Hill.

ASSISTANT: How may I assist you?

USER: Owing to an emergency, I want to cancel my reservation, could you help me in the cancellation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: We have found a reservation on your name, shall I cancel it?

USER: You can proceed to cancellation.

ASSISTANT: Your reservation was cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you.