It is a contradiction to say someone can convert someone else. Only God can touch the human heart and sow the seed of faith. All we can do it to share the Good News we have received.
Source, in full
“A CHRISTIAN DOES NOT CONVERT PEOPLE: A CHRISTIAN SPEAKS ABOUT GOD AND GOD CONVERTS HEARTS” SAY THE CATHOLIC BISHOPS OF INDIA WHERE CHRISTIANS HAVE SUFFERED OVER 500 ATTACKS IN THE PAST FEW YEARS (28 May 2003) Fides News Agency