Hello.
user
Hello. How may I assist you today?
assistant
I would like to change my existing reservation, which is done recently. Can you please help me out?
user
Sure, may I know you name for checking the details.
assistant
Thank you for considering my request.
user
Please wait a moment.
assistant
My name is Jack Clark.
user
Sorry, there are no active reservations on your given name to change.
assistant
Not a problem, anyway thank you for the information.
user
Thank you for reaching our service.
assistant