Hi,.
user
Hello, how may I aid you today?
assistant
Please change my existing reservation.
user
Sure, we are here to help you. Kindly mention your name to proceed further?
assistant
My name is Katherine Williams.
user
Ok, please hold a minute.
assistant
Sure.
user
Thanks for your time, unfortunately no reservation found with provided name.
assistant
Thanks.
user
Thank you for picking us.
assistant