Business Courses

Hello I wanting information on any type of courses in Islamabad that i will be able to shape up on. I need to know how to intract with the upper class society in paki as per my job. I myself come a low class society and seem to be out of place when I am amongst them in my business dealings. I know there are numerous courses for girls about self grooming and interactions etc etc but do not know any for guys. I basically have clients coming from overseas that i need to impress but I do not know anything about that. I need direction of how to intract with these types of people. So any types of courses dealing with ettiquettes what to do or not to do etc…