Hello, I am Barbara Carter.
Hello, how may I help you at this moment?
As my manager did not approve my leave, I would like to change my recent reservation.
Sure, I will help you. Please send your travelling dates.
First check the reservation with my name.
Sorry Carter, there is no reservation existing on your name.
That's ok, thank you for checking.
You are welcome. Thank you for reaching us, have a nice day.