property user_name : ""
user_name = "" # Added in because sometimes the script would magically remember the values of its last run despite being terminated?
if user_name is "" then
    set dialog_1 to display dialog "Please enter your username so I can dismount the corresponding volume" default answer ""
    set the user_name to the text returned of dialog_1
end if


tell application "Finder"
    try
        set remoteDisk to disk user_name
        eject user_name
    on error
        display dialog "Oh dear, I couldn't find a volume of that name (" & user_name & ") to unmount!" & return & return & "Have you had enough vitamin c today?" buttons {"No"} default button 1
    end try
end tell