As a professional and experienced VA It is usual task for me. I am a person who has experience in the online field since last 4 years (though I am new in Freelancer). I can work with clients with a very confidential room and I am knowledgeable so that you don't need to teach me everything.
I am always active on email and Skype so there would not be any communication gap if I get hired.
Moreover, I never stop continuing my service to my client until he is satisfied; so, obviously I am the worker you are looking for.