Hi.
Hello, how may I help you at this moment?
I want to change my existing reservation. Can you help me in this?
Sure, I will help you. Please wait for a moment.
Ok.
May I know on which name ticket has been booked?
I am William Anderson.
Sorry, there is no reservation showing on your name.
Not a problem, thank you.
You are welcome. Thank you for opting us, have a nice day.