Hi.
Hello. How can I assist you?
I need to change my reservation as I am not able to make my trip right now. Can you assist me about that?
May I know your name?
Sure, my name is Margaret Lopez.
Please wait for a while.
Sure, I will be waiting for your response.
Sorry, no reservation found on your name to change.
Oh! It might not booked properly at the time of booking, anyways thank you for the information.
Most welcome.