Dear Sir,
Don't worry about your job and trust me.
I am very qualified for your job and I need my opportunity to work with you.
My opportunity will be provided by you exactly, I am very happy about this opportunity.
Let's discuss about your job. I am ready for you.
If you select me, I will do my best for your job.
I can start work immediately.
Thank you so much.
I hope we will be in our interview asap.
Best.