Hello.
user
Hello. How may I help you?
assistant
I want to change my existing reservation. Can you please help me with this?
user
Sure, we are here to help you. May I know your name please?
assistant
Thank you. My name is Kenneth Parker.
user
Sorry to inform you that there is no active reservation on your given name.
assistant
Ok, no problem. Thank you for checking.
user
Thanks for contacting us.
assistant