The study of professional practice in the field of social work focuses on the action of those trained in social services. However, particularly from the second half of the 1970s, along side the emergence of the third sector, the struggle for social care provision has opened up the possibility for citizens to engage in community service projects by supporting those who are socially vulnerable. Intending to fulfill this gap, this study focus is contributing to improving the comprehension of social reintegration practices performed by volunteers. In order to do so, the interaction between volunteers from the Social Approach Group of the Soup Group of Niterói and people experiencing homelessness was analyzed through the theoretical-methodological approach of Conversation Analysis. The results reveal the overall structural organization of the interaction, identifying the steps of this work (beginning of the approach, probing, propositional conduction, and closure) as well as the (micro) actions that occur in each step. The research also points to the centralization of the offers in propositional conductions, separating the delicate offers, which present unpreferred format, from the non-delicate ones, which are performed in a preferred format. Based on the analysis, it is possible to identify some practices that are more or less effective to achieve the interactional goals.