I will be posting all my information on social engineering as i get it and write it. This thread may look crappy now but it will get alot better.
Its all about your act. You must practise who you are and what you wil do. Wether you prefer to act like a reformed gentalmen when you are acting smooth with a lady to get her to tell you somethign or if you are a enraged customer it just matters. Some poeple use a double persona as in the act as two different people.
I cant stress it enough practise practise practise. You need to atleast practise what you will do and how you will act inside your head.
Keywords are important so do research. Such as at target if you want to return something that you got from another store even you jsut say it was a gift you recieved and the recipt wasnt put in the bag by the employe. Now this plays on 2 things One Target has a policy for returnign items and 2 it was thier fualt.