Salams
typical prob.
In islam you have a right to say no, and also to choose who you marry, and accoridng to Imam A. Hanifa a girl can marry herself (ie. her guardian does not have to know or be there, although this is not the best thing to do.)
Also think about why y don't wanna marry him, is there a fault in him or just becasue you dad chose him, sometimes we think that we can make better decisions but trust me often (and in mt experiece) parents turn out to be right.
Obedeicne to parents is an extension to obeying our Lord. There is gurantee how your marriage lifwe will be but even if you chose someone the case will be the same.
someone suggested that exchange letters and find out stuff about him-but in isalm you are allowed to talk and see the person once to see if you wanna marry them, okay a few more times if absolutly necessary but if you start taking this route where will put the limit?
my advice is that if the brother is religious and pious then say yes otherwise try to explain to your parents and make them realise this way you won't necessarly be disobeying them. nut if hes practising then go for it, even if you don't like him now. Love grows slowll and comes from Allah. at the time of the nikah He puts love in our heatrs for each other.
My parents found this guy for me. I did not qurstion it and wenty along with it. at first i thought i'd hate him and perhaps did nut now i'm begining to like the idea and soon were gonna get marreid.
make duaa it works out