Looking for AI to Format Dialogues for Text-to-Speech Narration

Hello everyone. I have a question. I’d like to use AI to change the format of some novels so it indicates who is speaking. I want to do this to use the result for creating an audio version, where the F5 TTS can identify who is talking. Unfortunately, I can’t run Llama or other AI models locally because Ollama doesn’t recognize my RX580 SP graphics card. So, I’m looking for an online option. Here’s an example text of what I need. Input Well, the office is probably closed by now. But once I hand in that withdrawal letter, I can finally wash my hands of this whole mess.

-If that's all, I'm leaving now. See you later.

I wave nonchalantly, trying to shoo her away, but Kurebayashi-san surprises me with her next move.

-...I-I'm sorry… Sorry…

To my horror, Kurebayashi-san falls to her knees right in front of the front door.

Output {narrator} Well, the office is probably closed by now. But once I hand in that withdrawal letter, I can finally wash my hands of this whole mess.

{Yuuta} If that's all, I'm leaving now. See you later.

{narrator} I wave nonchalantly, trying to shoo her away, but Kurebayashi-san surprises me with her next move.

{Kurebayashi} ...I-I'm sorry… Sorry…

{narrator} To my horror, Kurebayashi-san falls to her knees right in front of the front door.