Probably the easiest way is to check for the existence of a submitted parameter, and then print the thank you page if it exists. If not, print your CGI form for user issue submission.

### Psuedocode, mostly
#!/usr/bin/perl -wT
use strict;
use CGI;

my $q=CGI->new();

if($q->param('submit')){ 
    #The "submit" param would come from a default submit button
    #Use some other parameter if it makes sense to you, like "problem 
+description".
    #Any field that's submitted by your form should work.
    #Print thank you page, however you want.
 
} else {
    #No parameter was submitted, so that must mean this
    #is a new request.
    #print your page for submitting the help desk request.
    #and do your post-processing.        
    
}
[download]

-Any sufficiently advanced technology is
indistinguishable from doubletalk.

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