Hi. I am Charles Thompson.
Hello, how may I assist you for today?
Can you help me in changing my recent reservation, as my interview is rescheduled?
I am glad to help you about your flight ticket modification.
Ok.
I regret to say this Charles, I am not able to find active reservations under your name to change.
That's ok, thank you for checking.
Most welcome, thank you for reaching out here.