Detailed Instructions: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Q: If I stamped my passport for an international flight as we usually do before international departures and then I changed my mind for any reason, for example a family emergency reason. What's the process to cancel the stamp and leave the departure area? 

A:
After passing through immigration at the airport, is it possible to cancel the stamp and go back?