These are two wonderful videos online:https://www.sermonindex.net/modules/mydownloads/visit.php?lid=6700https://www.sermonindex.net/modules/mydownloads/singlefile.php?lid=6558 There's also lot's of free videos at: www.wayofthemaster.com
All Comfort's messages are right on the mark for street evangelism, and one-on-one, but the best one in reference to you question is, "How to Witness and Preach Effectively"https://www.sermonindex.net/modules/mydownloads/viewcat.php?cid=5&min=60&orderby=titleA&show=20It is 21 points for street ministry, from the man who has stump preached over 3000 times.
_________________Hal Bachman