@Monica63 Typically when a host finds themselves in this situation it is because they failed to either accept or decline a reservation request.
When you receive an inquiry, all you need to do is reply to any questions posed, or send a Pre-Approval or Special Offer. That's it.
A reservation request requires you to accept or decline within the 24 hour window in order to count as a response required for the response rating. Many guests ask questions in reservation requests leading hosts to believe that just answering the question satisfies the requirement. Not so. You can ask questions and answer them but ultimately you need to make a decision one way or the other so the guest knows where they stand. If you decline for whatever reason, fine, the guest can look elsewhere. If you accept, great, they can now complete all their travel plans.
Hopefully this clarifies the situation. If not, get back to me!