Hello, I am Katherine Walker.
user
Hello, how may I aid you?
assistant
Owing to an emergency, I want to change an existing reservation, so please help me in changing the reservation.
user
Sure, please wait a minute.
assistant
Ok.
user
Sorry, there is no reservation found on your name.
assistant
Not an issue. Thank you.
user
Thank you for choosing us, hope to serve you next time.
assistant