Hello.
user
Hello. How may I help you?
assistant
I had a done a wrong estimation of completion of my work. So, I would like to change my existing reservation. Can you help me?
user
Sure, I will help you. May I know your name please for checking your reservation status?
assistant
Sure, my name is Thomas Baker.
user
Ok, please hold on a moment.
assistant
Ok.
user
Sorry, no reservation has been found on your name.
assistant
I guess I have changed it before. Anyways, thank you for the information.
user
Thank you for choosing our service.
assistant