Hello, I am Dennis White.
user
Hello, how may I help you?
assistant
As my manager did not approve my leave, so I would like to change my existing reservation.
user
Sure, I will check the possibilities and revert back to you.
assistant
Ok, take your time.
user
Sorry White, no reservation found on your name.
assistant
That's ok, thank you.
user
Thank you for booking. But unfortunately there is no reservation found, sorry for inconvenience.
assistant
That's ok.
user
Thank you for reaching us.
assistant
Thank you.
user