Hi.
user
Hello, how can I help you?
assistant
I want to change my existing reservation which is done recently due to some problems, can you please help me?
user
May I know your name please?
assistant
Sure, my name is Dorothy Jackson.
user
Sorry to say, there is no reservation on your name in our database.
assistant
Ok, no problem. Anyways, thank you for your service.
user
Thank you for opting us.
assistant