Hello.
user
Hello. How can I help you?
assistant
I would like to change my existing reservation, which is done recently. Can you please help me out?
user
May I know your name please?
assistant
Thank you for considering my request. Myself Michelle  Carter.
user
Please wait a while.
assistant
Sure, I will wait for your response.
user
Sorry to say, there is no reservation on your name in our database.
assistant
Not a big problem, anyway thank you for the information.
user
Thank you for opting us.
assistant
Thank you for your service.
user