It is not necessary for having conversations with strangers to be scary or unpleasant. It has the potential to be quite satisfying for you during the course of the day. "Fleeting intimacy" is what sociologists refer to as a brief experience with strangers that makes you feel like a part of the human community and allows for a level of self-disclosure even if you may never encounter that person again. Sociologists use the term "fleeting intimacy" to characterize these kind of encounters.
You will acquire strategies that will help you become an expert in chatting to strangers if you read this book.