Detailed Instructions: 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.
Q: I do not have etymology information for Laos, but historically speaking, Laos was a key part of the Vietnam War since parts of Laos were invaded and occupied by North Vietnam for use as a supply route for its war against the South.
A:
assistant