Converting people who go to your website into actual clients is one of the biggest problems most websites have. The issue is not so much in the content or layout of the site, it has more to do with the real lack of a "call to action". A call to action is simply an offer for the vistior to take a next step in your conversion path.
In other words, you offer all the information a reader would need to make a decision to hire you as an assistant. But, you dont offer them any reason to go forward or how to go forward. This could easily be resolved with the inclusion of a proper call to action. Here are some examples that may work:
"Call us now to speak with one of our Home Aid Specialists"
"Call now and receive 10% off your first service"
"Call now and get your first 3 companion calls FREE"
You get the picture. You need to create some urgency and a reason for them to call you. Make the offer stand out with a different font and color or add some graphics if you know how. Be sure to put some sort of "call to action" on every page of your site.
I also agree with Webline, you should invest in some SEO!
Best of luck and I hope this helped.