I need a Virtual Assistant

I need a personal Assistant who can be devising and maintaining office systems, including data management and filing, arranging travel, visas and accommodation and, occasionally, travelling with the manager to take notes or dictation at meetings or to provide general assistance during presentations,screening phone calls, inquiries and requests, and handling them when appropriate, meeting and greeting visitors at all levels of seniority, organizing and maintaining diaries and making appointments, carrying out background research and presenting findings,producing documents, briefing papers, reports and presentation. The work requires a minimum of 15 hours per week.