Hello.
user
Hello. How may I aid you at this minute?
assistant
Rebecca young here.  I would like to change an existing reservation. Can you help me.
user
Sure, I am here to help you with that. May I know your name?
assistant
Its Rebecca Young.
user
Sorry to say that, there is no reservation found on your name in our database.
assistant
No issue, thank you for your time and information.
user
Thank you for reaching us.
assistant