If the dream states the fact that the dreamer goes out for a date or an appointment, this points to the fact, that he should have an aim or an intention. The dream brings notice to him, something from what his inner self is already feels, that he should deal with it consciously. To miss a date or an appointment, refers to the fact that he turns insufficient attention to dream details.
Perhaps the dreamer can present himself for good work or reward. There is something what he can finish and do in a certain period. (With whom did you have the date? This could be important and give other explanations.)
At a spiritual level, the appointment in a dream is an indication of the dreamer, on spiritual effective way to save them or time to use them.
* Please, see meaning of meeting.