In an open conversation, click File.
Click Save Conversation As, browse to the location
where you want to save the conversation, then specify a filename.
or
Click Save Conversation if you have already saved the conversation
at least once.
Click Save.
The conversation is saved with a .txt file extension.
You are also prompted to save a conversation whenever you close the conversation. To change this setting, see To specify whether or not to be prompted to save conversations.