Tell me first @nisha005 You don't want to marry or you don't like the boy. If you don't like the boy means, is there any particular reasons? Don't say blindly, I hate this guy. If you don't have any relationships, then try to accept. Probably you may know in our culture especially bride side how much pressure and restriction are there.. Simply think, if you quit what is the assurance that you will find a perfect one? Don't take any step which ruined your life.Like yours, I know there are many marriages are successful.I am not compelling you, i am just saying the facts.
Analyse yourself first. You feel that this wont work out, then tell your parents. Speak with your sister, and ask her help.
If you are not interested in getting married, be yourself and follow your desires. Try to convince your parents and ask for giving sometime. Tell them you will get married when you feel the time is right. Dont mess up all. Make it simple. Good luck
I feel you must share this feeling with your parents and let them know instead of not sharing this , May be than they will make you understand or clear the things which you dislike in this proposal or even cancel If they agree with your points .
How is a big question , but I suggest remember they are your parents you have been grown and groomed by them and they will feel good if you shared yr feelings and not hurt .
You should talk with your parents directly. Marriage is very important for our life. So, please don't hesitate to say anything. Remember that, if you don't want to marriage from your heart, you will not happy in your life. This is your life, you have the right to take this decision.Thank you for sharing your problem.