Hello,.
Hello, how can I address you?
I am Mary Parker. I want change my existing reservation as my locations of travel has been changed. Will you help me in changing my reservation?
Sure, I am willing to help you.
Thank you.
Please stand by I will get back to you.
Sure.
Thank you for waiting, sorry to say no reservation found with your name.
Ok, no issues.
Thank you for opting us, have a nice day.