I say no thats not RP. Thats just hurrying up to get a blue message. If you want blue messages then go to conn. There needs to be more. A LSF would not say "i attack you" he would be like "stand down rogue or i will use force to disable your ship. prepare to be arrested and locked up for a good long time."
Plus give the other person some time to respond. Be courteous. Its a game after all.