id - int(11)
user_id - int(11)
property_id - int(11)
status - enum('open','closed','archived')
last_message - text
last_message_at - timestamp
created_at - timestamp
updated_at - timestamp
is_typing - int(11)
admin_typing - int(11)
room_id - int(11)
agent_id - int(11)
inquiry_type - enum('room','agent','general')