Hi, I am Robert Thomas.
user
Hello, how can I serve you today?
assistant
I need to change my recent existing reservation due to postpone of my sister's wedding. Could you please help me in doing that?
user
Sure, wait for a moment.
assistant
Sure.
user
Thanks for waiting, no reservation was found with your name.
assistant
No problem, thank you for your information.
user
Thanks for choosing us.
assistant