добавил запрос к серверу

static/js/bill.js

@@ -139,6 +139,15 @@ function open_service_request_window(course){
     }
 
 }
+function send_letter_to_manager(course){
+  if ($('[name=REQUEST_USER_ID]').val() != 'None'){
+    $.ajax({
+      type: 'GET',
+      url: '/management/send_letter_to_manager',
+      data: {'id': $('[name=REQUEST_USER_ID]').val(), 'course': course}
+    })
+  }
+}
 function open_journal_request_window() {
     $('#journalAccess').modal('show');
 }