The only real meta is to treat everybody as an individual. Pay attention to how they react during different stages of the conversation and tailor your own behavior to make them more comfortable. Some people respond well to being asked about themselves. Other people become nervous and evasive. Pay attention to how they respond and react accordingly.

Besides that, there is no "one size fits all" approach. The only approach that works for everybody is to treat everybody like an individual with a unique personality.