Yes, we need to obey our parents but that doesn't mean that you cannot give your opinions, and put your interests forward to them on how you think of marriage and the spouse you are looking for. We need to talk to our parents in a way that they would respect our views as daughters / sons. So please do try and rationalise with your parents and communicate effectively with them. Even if you are middle class, there's no class system in the eyes of Allah swt.