Hello.
Hello. How may I assist you today?
I want to change my existing reservation. Could you help me with that?
Sure I will help you. Please help me with your name.
John Walker here.
Please allow me a minute.
Ok.
John Walker, I am really sorry to inform you that there is no booking found on your name.
That's ok, no problem. Thank you.
Thank you for reaching us. Have a great time!.