Hello.
Hello. How may I help you?
In my existing reservation I need to do some modifications, please help me in that.
Sure, may I know your name so that I can help you easily.
Sure. My name is Brian Jones.
Ok Jones, please wait a moment I will check your previous reservation whether it is existed or not. Thanks for your time, there is no reservation under your name.
It's ok. Thank you.
Welcome, thanks for consulting us.