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.

The Texas Eagle and Sunset Limited routes serve South-Central Arizona, stopping at Tucson, Maricopa, Yuma and Benson. In Tucson, the Sun Link streetcar system travels through the downtown area, connecting the main University of Arizona campus with Mercado San Agustin on the western edge of downtown Tucson.
assistant