Hi,.
user
Hello. How may I aid you now?
assistant
Please change my existing reservation.
user
May I know your planned dates for this journey? Ok, please tell me your name.
assistant
I am Nancy Brown.
user
Ok, please wait for a moment.
assistant
Sure.
user
Nancy Brown, no reservation was found by your name.
assistant
Thanks.
user
Sorry for the inconvenience. Have a great day.
assistant