LMS or language training app for teachers to assign interactive activities to students, like custom AI chat scenarios

There are tons of AI tools for individual learners to practice text- or audio-based conversations in a new language, for example Univerbal, ELSA AI, even the big companies like Memrise and Duolingo offer something.

I'm a language teacher, and I'd like to use these tools with my students in conjunction with my own training. However, I haven't found any tools that allow me to access the practice session.

Here's what I'd like to be able to do:
- Create highly customized conversation scenarios that describe the AI's personality, the situation, and 2-3 goals for the conversation
- Assign specific scenarios to specific students (ideally being able to assign one scenario to multiple students)
- Access a dashboard which shows me the results of the student's conversation, including the text transcript and AI feedback

Bonus capabilities:
- Ability to review the recording of the conversation
- Automatic tracking of student progress within the teacher dashboard. For example, showing that Student A made 10 grammar mistakes and used overly simplistic vocabulary when they began, but after 8 conversations, their grammar mistakes decreased by 50% and the average level of their vocabulary increased by 3 grade levels.
- Ability to somehow integrate the assignments within a larger LMS, like LearnWorlds, Thinkific, etc. to minimize the number of apps students have to use.

There are thousands (maybe millions!) of language teachers out there, and this could be hugely helpful to minimize active class time without minimizing student practice time. Happy to speak directly about this if anyone is interested!