You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I need to cancel my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, I am happy to help you to cancel the ticket. Can I know your name please?

USER: Thank you for considering my request. Myself Gregory Williams.

ASSISTANT: I have found your past ticket reservation in our database. Shall I proceed to cancel the ticket or not?

USER: Sure, you can proceed with that reservation cancel.

ASSISTANT: As per your request, I have cancelled your previous ticket which is under your name.

USER: Thank you for your help in cancelling my reservation.

ASSISTANT: My pleasure. Thank you for opting us.