How can I initiate a telegram conversation in order to send a message to a telegram user from node js

I want to use telegram from a node js script in oder to send a kind of <<"transaction success confirmation">> message, but as I saw, a bot cannot initiate a chat enventhou you have both of user ID and chat ID, so in my case I want to start a chat with a user just like a confirmation email. If you have any idea please help me guys