Sentence:  You will probably know pretty quickly if you are dealing with a “<WSD>greenie</WSD>” who is reading from a script or a seasoned professional. If it′s a <WSD>greenie</WSD>, give him a polite “no thank you” and hang up. But stick with the pro through the entire call. 
Meaning of the word marked with <WSD> tags:  A beginner, a novice.