I sent a message to the director asking for leave, but I didn't get a reply. Is it accurate or possible?

Generally speaking, if the other person who sent the text message didn't reply, it was the default meaning, and you can also interpret it as approval or disapproval, because she didn't reply. This is a question for you to guess and imagine, and you can play it yourself. You texted him for leave. As long as you do it, you can rest or not according to your actual situation, which is something you can master. The director's attitude is a default attitude. If he doesn't agree, he will tell you directly that he can't, but he doesn't want to reply to you directly. If he tells you that it has been approved, you should take it as the default. Generally speaking, it doesn't mean that he didn't receive this message. It doesn't mean that he received it, but he didn't want to give it to you. Holidays can only be understood as the default, so you can have a good rest.