Hello.
Hello, how can I oblige you today?
I am Helen Clark. I have to change my previous flight ticket booking, can you please help me in that?
Sure, please wait for a moment.
Thank you for considering my request in positive manner and I can wait for your reply.
Thank you for waiting, there is no reservation found on your name.
Ok, that's fine.No problem with that one. Thank you for your search and providing the information.
Thank you.