Are you sure that the interrogative is absolutely mandatory? Could it never be omitted?
Atleast the "correct solution" should have correct english grammar. When asking questions, "Do" comes in first. "Do you not have a skirt, George?" should be an acceptable solution. Reported already.
Weird grammar in the answer. And don't you need yo start with هل if it's a yes/no question, or os that optional?
You can't say "هل ليس," you can only say (2a laysa) "أَلَيْسَ." The 2a means the same thing as hal. But yeah, هل is optional. It's a bit of a conversational starter, but if you're asking a follow-up question to something already said, it sounds more friendly to skip it.
You can use "هل" Like that - هل عندك تنورة يا جورج Means : do you have a skirt George But the sentence in the question is - Don't you have a skirt George And the translate should be - أليس عندك تنورة يا جورج