How to initiate dialogue in Slack

How to initiate dialogue in Slack 
 Video manual: https://www.youtube.com/watch?v=GqUpbqOvFoY 1. In Slack use command /templates and press "send"  button 
 
 
 
 2. Copy a template that you need with  template id  
 
 
 
 3. Send a template to your client using this format: (number) text of the template