Let the Father respond. The Bible says the Father is eager to answer, if our request is according to His will. And if it is, be prepared for His answer, nothing wavering. But the Bible, our Manual of Arms, often talks about fasting, usually in connection with some kind of prayer warfare. Prayer, however, is more complex than simply asking a loving father to supply his child's needs.
Prayer is warfare.
Prayer is wrestling. There are opposing forces. It does not speak of any other kinds of fasts. Fasting and prayer warfare, in addition to setting free the oppressed, can also obtain direction and discernment for other strategies and tactics to use against the enemy of souls. So, when you fast , be sure to pray and use GOD's Word, your sword, in your combat.