Hello.
Hello, how may I guide you?
My appointment with my manager has postponed, so I would like to changing my existing reservation, will you help me with this?
Sure, I am glad to help you. Can I know your name please?
My previous reservation has been done with the name of Richard Miller.
Miller, no reservation found with your name to change further.
Ok, not an issue. May be something went wrong while booking the ticket.
Ok.
Thank you for providing information.
Thank you.