[PubQ] Did I Goof?

Hi good people of PubTips! I need some guidance.

I'm making a graphic novel, and I sent queries to a bunch of agents with my pitch packet. I just heard back from an agent who wants to see the full script. The problem is, I don't have one! I did include a detailed outline in my email, but no script. I can definitely write one, it just might take a couple of days. The reason why I don't have one is because I tend to ad lib dialogue when I'm drawing. I have a script written for the first 4 chapters, but nothing after that. Is it best to be honest and tell them I don't have a full script, but can send it in a few days? Or should I furiously write one out now and send that? I don't want to seem unprofessional. I feel like a dope!

Thanks for your help!