Hello. I am Charles Adams.
user
Hello, how may I support you at this moment?
assistant
I would like to alter my existing reservation due to postpone of my interview date. Could you please help me in doing that?
user
Sure, please wait for a while.
assistant
Sure.
user
Sorry, there is no reservation found on your name.
assistant
No worries, thank you for your information.
user
Thank you for availing us.
assistant