You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best serve you today?

USER: As my meeting got postponed with my client, can you please help me in cancelling my existing reservation?

ASSISTANT: Sure, I am here to help you with that, can I know your good name to proceed further?

USER: I am Rachel Carter.

ASSISTANT:  I found your reservation on your name and I have been cancelled successfully.

USER: Thank you.

ASSISTANT: Thank you.