Hi.
user
Hello, how can I help you?
assistant
I want to attend my sister marriage for that I reserved the ticket, but now I want to change the reservation. Can you help me to change an existing reservation?
user
Sure, I will be glad to help you. May I know your name please?
assistant
I am Edward Moore.
user
Sorry Edward, there is no reservation found on your name. Want to have any more information please?
assistant
OK fine. No thanks. Thanks for your valuable information.
user
Thank you and have a nice day.
assistant