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

User requests (one per turn):
user: Arrange a complete listing of all files and directories presently located here, making sure you don't overlook the hidden ones too.
user: Transfer the 'annual_report.txt' in Documents directory to the 'Reports' directory that's in Documents directory, but also make sure it remains available in its current spot.
user: Reveal the last lines of 'Q4_summary.doc' so we can ascertain how the report wraps up.
user: Attempt to relay a message to the individual with ID 'USR002' by logging in as USR001, updating them on the finalization of the report saying 'The report has been finalized.'.

Expected function call sequence:
GorillaFileSystem.ls
GorillaFileSystem.find
GorillaFileSystem.cp
GorillaFileSystem.mv
GorillaFileSystem.grep
GorillaFileSystem.tail
MessageAPI.send_message