Hello. I am Rebecca Hernandez.
Hello, how can I give assistance to you Rebecca Hernandez?
I need to change my recent reservation due to postpone of my  holiday trip with my family. Could you please change it for me?
Sure, we are here to help you. Ok, please wait for a while, I will check the status and notify you.
Sure.
Thanks for your time, there was no reservation on your name.
No problem, thank you for your information.
Thank you for choosing us.