Hi.
Hello, how may I provide assistance for you?
Owing to have an emergency, I would like to change my reservation.
Ok.
Aid me in  changing the reservation.
Sure, we are here to help you. May I know your good name?
My reservation was done with the name of Elizabeth Hernandez.
Please, stay online. I will check the previous list and revert to you.
Sure.
Thank you for your valuable time.
Fine.
We are sorry to inform you that, no reservation was found on your name.
Ok. Thank you for your information.
Thank you for reaching us, have a good day.