Am I doing this right? Not getting replies to messages but why?

I recently joined as a sitter and got some requests for bookings. The owner typically just says a couple of words about the dog’s temperament and nothing else. As an initial message. I thought the correct this to do was to propose a meet and greet so I have done that but owners just aren’t replying and I don’t know if they are waiting for my to confirm booking or just can’t be bothered to reply or no longer are interested. I have 2 pending requests I don’t know what to do with because I’m not hearing anything back, and was wondering if I should be confirming the booking or cancelling it. What does everyone normally do? Do you normally get the meet and greet organized before confirming?