I work 100% remotely, as does the rest of my company. We use Microsoft Teams and email for everything. Some of my coworkers communicate with me by sending a single "Hi Iannaa" email or Teams message, and then they follow up 15 minutes later like "Let me know when you're free". Sometimes a little bit after this they'll CC either their or my manager and ask if I'm in the office today.
If I'm quick to see the message, I sometimes respond with "What's going on?" and they just ask if I'm free now. They never tell me what they want until they know that I'm "live" and we're several messages or emails in. This is becoming more and more common, and some people I work with are starting to sound really annoyed at me for not participating in their only-live communication style. Is there anything I can do about this?