Lori has agreed to transact real estate business on behalf of Alex with Alex’s authority. Lori is:

An agent is someone who transacts business or manages the tasks of another person (e.g., principal), pursuant to the principal’s authority. A principal is the party that the agent represents and acts on behalf of, such as Alex. Lori is not necessarily a licensed salesperson. She can be an agent and hold another position, such as a broker, that requires an agency relationship.