Joke Collection Website - Public benefit messages - How should an elder reply to a text message "I'll call you when it's convenient for you"?

How should an elder reply to a text message "I'll call you when it's convenient for you"?

If I am busy, I will reply to my elders immediately and call them as soon as they are busy. If I'm not busy, I'll call my elders at once. Because I have encountered this situation, an elder sent a WeChat asking if he could call me. I was really sorry at that time. Call immediately.