Visit the leader and send a text message to make an appointment. How to send text messages?

1, hello, XXX leader! I am XXX. Thank you very much for checking my message in your busy schedule. I want to ask you about * * * *. Can I visit you at * * time? Better make a phone call sometime. SMS is not sincere and formal enough.

2. Visit for the first time or ask an acquaintance to introduce you. Sending a message to make an appointment is very informal and disrespectful. It's really not good to make an appointment by phone, and the success rate of calling is not high. It is not good for the other party to be busy. And the possibility of being rejected by calling is very high. If you just want to give gifts, you'd better take the leader's wife with you when he is away.

3. Hello, Minister X! I'm sorry to bother you in your busy schedule, but I have a question about production technology, which I don't quite understand. I want to ask you at home, and the time will be around the afternoon of the day after tomorrow. I would appreciate it if you don't give up our meeting! Dear XXX from department X!