Hi.
Hello.
I am Mark Adams.
How may I aid you?
I need to amend my reservation due to some issues, can you help me out?
Sure, I am here to help you. Please wait for a while.
Thank you and take your own time.
Sorry to inform you that there is no reservation found on your given name.
That's ok, not an issue. Thank you.
Thanks for reaching us, have a nice day.