As part of our spiritual learning process, in dreams we at some point will meet (come face to face with) a figure who is representative of a spiritual teacher....
If you are meeting someone in your dream, then this is about integrating one aspect of yourself with another. Consider the feeling tone.See Integration Dreams....
If you dream of swapping minds/bodies with someone, it symbolizes that you are trying to understand that person better. You may envy something about them and want it for yourself, ...