Multi-turn user requests:
user: I am alex. Go into directory name after my name and list all the visible and hidden contents in the current directory now, please.
user: Move one of the 'log.txt' files into a new directory 'archive'.
user: Investigate within 'log.txt' for the occurrence of the keyword 'Error'.
user: Finally, show the last 20 lines of a specific file for me.
user: The file name is 'log.txt'.

Tools involved: GorillaFileSystem
Expected function-call sequence: GorillaFileSystem.ls
GorillaFileSystem.find
GorillaFileSystem.mv
GorillaFileSystem.grep
GorillaFileSystem.tail