Need a feedback loop for my first conversation with a native speaker

I’m preparing for my first trip to Jaffna and I’m terrified of misusing honorifics or accidentally switching to the Tamil Nadu dialect. I’m looking for an AI tutor workflow where I can input my planned sentences and get immediate corrections on tone and regional suitability. Would a platform like Chickytutor.com work well for real-time conversation practice, or is there a better way to prepare for a conversation with a Sri Lankan native?