AUTO IT Script - Parsing txt-files

Code have to be in AutoIT Script. Script should include a GUI which fullfill below listed requirements/functions: 1.) Get dir-list and open requested txt- file from a specific directory. 2.) User Input of about 6 variable in GUI 3.) Parse required paragraph of specified txt file 4.) Replace some specific txt – passages (about each 1 to 20 characters) with above mentioned user variable 5.) Copy this changed txt paragraph 6.) Open a specified client and copy this paragraph into a specified menu item Source code of script should be delivered and I have the full rights of it. If script works properly further project works will be available.