Hello.
Hello, how may I assist you?
Actually, my friend book a flight ticket in economy class instead of business class. Can you please help me in changing of my existing reservation?
Sure, may I know your good name please?
Myself Catherine Wilson.
Please wait for a moment.
Ok.
Sorry, there is no reservation found on your name in our database to change.
Ok, no problem. Thank you for your information.
You are most welcome.