Thai to Northern Khmer translation / Northern Khmer transcription

I am trying to learn Northern Khmer (ภาษาเขมรถิ่นไทยอีสานใต้) as spoken in Surin, Buriram, Sisaket, etc. I am looking for someone to:
- Translate Thai to Northern Khmer
- Transcribe audio in Northern Khmer (using Thai alphabet)
- Translate Northern Khmer text to Thai