Hi.
Hello, how can I assist you?
I have made a mistake while booking a ticket so, I want change my reservation.Can you help me?
Sure, may I know your good name please?
My name is Joseph Baker.
Please wait for a moment, let me check it and revert back you.
Ok.
Sorry, there is no previous reservation found on your name to change.
No problem.
Thank you for approaching us. Have a great day.