Hello, I am Charles Wilson.
user
Hello, how can I aid you?
assistant
Can you please help me to change an existing reservation because I have a important meeting?
user
Please wait a moment.
assistant
Sure.
user
Sorry to inform Charles Wilson, we did not find any reservation with your given name in our data.
assistant
Ok, That's not a problem.
user
Thank you for approaching us.
assistant
Thanks for your information.
user