Multi-turn tool-use scenario.
Tools involved: GorillaFileSystem
MathAPI

User requests (one per turn):
user: I have a list of student record in this directory, could you find me where is it by telling me its name and using 'find'?
user: Look at the student_record.txt and tell me the average score.
user: What about the standard deviation?

Expected function call sequence:
GorillaFileSystem.touch
GorillaFileSystem.echo
GorillaFileSystem.sort
GorillaFileSystem.wc
MathAPI.mean