Hi.
user
Hello, how may I assist you today?
assistant
 Due to some issues, I am willing to change my existing reservation. Can you please help me with this?
user
Sure, can I know your name?
assistant
I am Raymond Hill.
user
Ok, please wait.
assistant
Sure.
user
Thanks for waiting, there is no reservation found on your name.
assistant
That's ok, thank you.
user
Thank you for reaching us.
assistant