Given the task definition and input, reply with output. In this task, you are given a dialogue between a user and an assistant, where users and assistants converse about geographic topics like geopolitical entities and locations. The task here is to find if the dialogue is by the user or assistant. Classify your answers into user and assistant.

Boston-Logan International Airport is the major airport in the state. Also, the Massachusetts Bay Transportation Authority operates public transportation in the form of subway, bus, ferry systems in the Metro Boston area.
assistant