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

User requests (one per turn):
user: Go to documents folder in CWD. Next, from a specific document in the folder. What does the last line look like?
user: it should be the first document in current folder.
user: Write the difference of the first two file into a new file call file5.txt.

Expected function call sequence:
GorillaFileSystem.ls
GorillaFileSystem.cat
GorillaFileSystem.sort
GorillaFileSystem.diff
TwitterAPI.post_tweet