Search the file through the content of the file on your computer. Office assistant could help you search for your file you needed by many conditions( Such as contents, asterisk wildcard,homephone,capital or minuscule,neglecting the blanks among the words).
Office assistant could work on many kinds of files(MS word, MS excel,html,txt).
If you are engaging in the processing of the file and document(reporter, editer,....), the Office assistant is a good choice for you to make you work more efficient.