Hi @Erica2 

You can create another flow variable and store the converted date using inline scripting.

var gd = new GlideDate(REFERENNCE TO YOUR DATE VARIABLE);

return gd.getByFormat('MM-dd-YYYY');

Then you can use the variable which have formatted date in description field.

If you don't want to use another variable you can directly use inline scripting in Description field value setting with same logic and construct entire description in script and return that value.

Please mark my answer helpful and accept as solution if it helped you 👍✅