Hello.
Hello, how may I help you?
I want to change my existing reservation as my trip dates has been postponed. Can you help me with that?
Sure, I am here to help you. May I know your name?
Thank you. I am Mary Hall.
I am sorry to say you that there is no reservation found under your name in our database.
Ok, no problem. Thank you for your information.
You are welcome and have a nice day.