Hi.
Hello, how may I aid you today?
I am unable to modify my reservation, can you help me to modify?
Sure, we are here to help you.
Thank you.
May I know your name please?
Andrew Wright is my name.
Ok, please wait for a while.
OK.
Sorry we could not find any reservation with your name.
Ok, no problem. Thanks for the information.
Thank  you for reaching us.