Dear Mr. Singh,
I have worked in scriptwriting before, including for corporate videos. In the past, I have also lectured on social issues at the University of Hong Kong, and as a part of that gave a lecture on CSR at international law firm DLA Piper, so I should be able to have a close understanding of your project's topic.
For these reasons, I think that I would be a good candidate for your work. I am a native English speaker so you know the English will be top quality. I can also promise a relatively quick turnaround time.
Please feel free to contact me if you have any questions. I look forward to working with you.
Best regards,
Damian Storey