Variety of approaches to mitigate an absence of a skill input during a collaboration session are described. A collaboration service detects a demand for the skill input associated with the collaboration session based on a behavior analysis of participant(s) of the collaboration session. Next, a multi-level search is performed for a person capable of providing the skill input. Upon locating the person capable of providing the skill input, a contact option for the person is identified. The contact option for the person is provided to the collaboration session.