Answer: Liaison role of management
Explanation: In simple words, liaison role of management refers to that role in which the managers works as a bridge between two entities so they can effectively communicate with each other. This communication could be done for both internal or external purposes.
In the given case, Michelle is first trying to resolve the conflict between city members and managers and after that he will be going to address a complaint filed by an employee against a team leader.
Hence he is performing the role of liaison officer.