HI sir, I can provide you a sample of 10 minutes of the audio converted into a written text file, if you liked it, and it was all good, you can hire me for the project. As long as the audio is understandable, and clear enough, it'll be done within 3hours of project rewarded. There wouldn't be any grammatical, or spelling mistakes, I go to american university in my country, and I scored over 500 in TOEFL. I have been speaking, and working with many american clients, there wouldn't be nay communication issue either. thank you