You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how could I assist you?

USER: Due to the sudden health issues, I am unable to catch a flight. So I have a request to you to cancel my existing reservation?

ASSISTANT: Can I know your name please?

USER: Sure, I had a recent reservation with name Ruth Edwards.

ASSISTANT: Please wait for a moment, I will check and back to you.

USER: Sure.

ASSISTANT: We found a reservation on your providing name. Shall I proceed?

USER: Please cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thanks for your kind service.

ASSISTANT: Thank you for choosing us.