Record training video with speaker using green screen background

We are developing training courses and we are looking for someone to record a video with a "spoke person" reading our script with a green screen background. This project will be a tryout for 1 or 2 lessons. However, if we like the result and pricing we can continue with production of further 30-50 lessons (approximately 20,000-40,000 words). (!) Preferred female talent with american accent!!! If you have a portfolio, please submit a link. Thank you!