You can send messages directly to your friend on Facebook. Check the steps below to see how to do it.
Sign in to Facebook
- Visit www.facebook.com and sign in to Facebook with your username and password.
Access Message Page
- Click on “Message” link in the menu on the left of your homepage to enter Message page.
Click “New Message”
- On the sending message page, click on the adding new message button in the top right corner.
- Type the name of your friends whom you want to send messages to in the typing field and select them 
- Enter your messages in the box to start your conversation.  When you finish typing, click on the Send button to send the message.