Hi.
user
Hello, how can I assist you?
assistant
I want to change my reservation, can you help me?
user
Sure, may I know your good name please?
assistant
Myself Andrew Rodriguez.
user
Please wait for a moment.
assistant
Ok.
user
Sorry, there is  no reservation found on your name in our database to change.
assistant
No problem, thanks for checking.
user
You are welcome.
assistant