Hello.
Hello. How can I assist you at this time?
I want to change my existing reservation, can you please help me out in that?
Sure, I will help you. May I know your name for checking your previous booking?
Myself Samuel Green.
Please wait for a moment.
Sure.
Sorry Green, there is no reservation found on your name to modify it. Thank you for your time in reaching us.
Oh! That's fine I'll choose other way to travel. Thank you for helping.
Have a nice day.