Well, a good question I must say. Usually, the hiring agencies prefer reaching the companies that provide virtual assistants services. Since these agencies are managed professionally, therefore they are capable of serving the clients rather effortlessly. However, if you are planning to do things yourself, then you can do it. However, it can demand some time and energy before you actually reach the best professionals. Here, I can suggest you to contact Pentacle Tech, a reputed agency in the USA that provides excellent professionals that you can hire as dependable virtual assistants.