Hello employer,
I have read your proposal and would like to apply for the job mentioned. I could send you a sample of my voice through means that you would like me to send it to you (email, telegram, etc.) For your information, I'm non-american/european and I'm from Malaysia. However, I could try to mimic the voice you needed.
Do look forward from me, and thank you for your consideration.
Regards,
Emma Z.