You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Due to an emergency, my trip got cancelled. Can you please help me in cancelling my reservation?

ASSISTANT: Sure, can I know your name?

USER: My name is Margaret Edwards.

ASSISTANT: Margaret, your reservation is successfully cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you, have a good day.