Hello.
Hello, how may I help you?
My name is Nancy Wilson.
 Nice to meet you Nancy Wilson.
As my brother's marriage got postponed, I would like to change my reservation.
Oh! ok, please wait, I will check it and let you know the details of your previous flight.
Ok.
Sorry to inform you, there is no reservation found with your name to change.
It's ok. Thank you for your information.
My pleasure.