Hello.
user
Hello. How may I aid you today?
assistant
I would like to change my existing reservation, which is done recently. Can you please help me out?
user
Sure, I will help you with that.
assistant
Thank you for considering my request.
user
May I know your name please?
assistant
 Myself Andrew Lee.
user
I am sorry to say that there is no reservation found under your name.
assistant
That's ok, no problem.
user
Thank you for reaching us.
assistant
Thank you for your service.
user