It is permissible for a man to speak to a non-Mahram woman subject to the following conditions: 1- It is done without being alone with her. 2- Not to go beyond permissible topics. 3- Not to subject oneself to Fitnah. 4- The woman should not speak in a soft manner. 5- The woman should be wearing full Hijab and be modest. 6- Not to go beyond what is necessary.