Hi.
user
Hello. How can I hand helping to you?
assistant
Can you please help me in changing my existing reservation?
user
Sure, I am happy to assist you in that one. May I know your name for checking?
assistant
I have reserved my flight ticket with name Ryan Parker.
user
Ok, please wait.
assistant
Ok.
user
 Ryan Parker, there is no ticket found to cancel it.
assistant
Ok, fine not an issue. Thank you for checking.
user
Welcome.
assistant