Hello. I am Karen Walker.
user
Hello, how may I help you?
assistant
I have to change my flight ticket booking that I am unable to attend the trip, can you please help me in flight ticket modification?
user
Sure, please wait for a moment.
assistant
Ok.
user
Sorry to inform that, there is no reservation found on your name.
assistant
No problem, thank you for your information.
user
Thanks for reaching us, have a nice day.
assistant