By asking solid personal questions in each message, you show interest in the other person and indicate that you want to keep the conversation going. (datingadvice.com)
Show interest in other people's stories, ask questions about them, their interests and hobbies; you might find common ground which will lead to further, more natural conversations. (inspiringinterns.com)
She isn't interested in other dogs and doesn't want them to come near her bed but just politely tells them to back off. (gsgsrescue.org)