@Carol724 They want to encourage as many bookings as they can, that's why they do that (just like they want you to basically list your room at a loss-"You could get XX more % of bookings if you lowered your price to the cost of a hot dog!") No one is actually looking at your messages with a guest to see that the Inquiry was inappropriate to your listing requirements and offerings, or that the guest wasn't really anywhere ready to commit to a booking, but was just asking some questions. It's just a stupid algorithmic computer bot that sends out those annoying proddings.
If you clear your cache, those messages usually disappear. Also you can go to your dashboard and remove them once they've expired.