Response Date

Put some sort of response date so that clients have to choose whether or not to act. People will not respond if you don’t ask them to. Another way you could say this is that you want to ask a clear question of people. If you want to do this, call by x date. You ask a question, they answer. Don’t leave it hanging so that someone can read your flyer and decide they want to use you, but never get around to it.