Hello.
Hello, how can I assist you?
I want to change my existing reservation due to sudden postpone of my trip dates. Can you help me with that?
Sure, please wait for a moment. May  I know your name?
I am Scott Scott.
Ok, please wait for a moment.
Sure.
Thanks for waiting, there is no reservation found on your name.
Ok, no problem. Thank you for your information.
Thank you for choosing us.