Hello.
user
Hello, how may I assist you?
assistant
I have changed my plan. So please help me to change the existing reservation.
user
Sure, may I know your name please?
assistant
My name is Laura Young.
user
Sorry to say this Laura, there are no flights booked with your name.
assistant
That's ok, thank you for searching for the details.
user
You are welcome. Have a nice day.
assistant