To delete one or more messages from a conversation:

 
It's easy only five steps...
1. Click Messages on the left side of your homepage 

 2. Open the conversation you want to delete a message from

3.From the Actions menu, select Delete Messages...
4. Use the checkboxes to select the messages you want to delete

5. Click Delete

You can delete an entire conversation by clicking Delete Conversation... from the Actions menu.


Keep in mind, once you delete your copy of this conversation, this action can't be undone.