It is a symbol of phantom that you seek.
see: sad news
see the spirit of the woman: you will get promotion
see a few ghosts: you are tormented with memories, you must end the matters from the past, and you will feel a relief
see white: self-control, harmony, tranquility
see black: feel anxiety, there may arise minor problems
talk to him: nice and good impression
scare him: you will be exposed to the unpleasantness
be a ghost: you do not know how to manage your life.