Hello.
user
Hello. How may I help you?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, I will help you with the change of flight reservation.
assistant
Thank you.
user
May I know your name please?
assistant
I am Matthew Thomas.
user
Please wait.
assistant
Sure.
user
Thanks for waiting. Sorry to say that there is no flight reservation on your name to change it.
assistant
Ok, no problem.
user
Thank you.
assistant
Thank you for your time.
user