Hello, I am Sarah Hill.
user
Hello, how can I support you now?
assistant
As my manager did not approve my leave, so I would like to change my reservation.
user
Ok, please wait for a while.
assistant
Ok, take your time.
user
Sorry Sarah, there is no reservation found on your name in our database.
assistant
That's ok, thank you.
user
Thank you for choosing us, have a nice day.
assistant
Welcome.
user