Hello, I am Brian Smith.
user
Hello, how may I render you at this moment?
assistant
As my manager did not approve my leave, I would like to change my recent reservation.
user
Sure, I will help you. Please wait for a while.
assistant
Sure, take your time.
user
Sorry, there is no reservation available on your given name.
assistant
Sure, take your time. That's ok, thank you for checking.
user
Welcome. Thank you for reaching us.
assistant
Welcome.
user