tell application "Finder"
-- SELECT FOLDER
set dupTo_folder to choose folder with prompt "Please select the folder you wish files to be duplicated to."
-- SELECT FILES
set dup_files to choose file with prompt "Please select the files to duplicate." with multiple selections allowed
-- DUPLICATE FILES TO SELECTED FOLDER
repeat with i from 1 to count of dup_files
duplicate item i of dup_files to dupTo_folder with replacing
end repeat
end tell