Her name is Ann.She goes to work by bus every day.She works

Her name is Ann.She goes to work by bus every day.She works in a building.It opens at 8 a.m and closes at 6 p.m.There is a lot of good food,drinks and other things where she works.Children like to go there.She meets a lot of people every day.She often says,“Can I help you?” when she meets people.She says,“My work is not easy,I must stand all day and be friendly to everyone.”
根据上面一段文字,依据逻辑推理出下列答案.
Ann is a ______ or a ______assistant.