Yes you can have live chat on your website to communicate with your visitors. It's easy and it's free!
1. Go to www.sigmachat.com
2. Click on 'Sign Up' (The basic service is free.)
3. Fill out the required information and submit.
4. Click on 'Chat Link Code' to acquire the html code.
5. Copy the code and paste it into Source in the text editor on your site.
6.  Make sure and click the disc icon to save. 
7. Your live chat will be up and running on your site!