Hi.
user
Hello, how may I abet you?
assistant
I am Pamela Hall, I wan to cancel my reservation, because my appointment with my lawyer  has been cancelled, help me in cancelling my reservation.
user
Sure, I am here to help you. Please wait for a while.
assistant
Sure.
user
Thanks for waiting, but no seat is reserved for you in any flight.
assistant
Its ok, thank you for your assistance.
user
Thanks for your approach.
assistant