Postcard-style Air Ticket / flight ticket

Life is a non-stop journey. We always travel around other countries, and many people have the habit of writing diary to record their feeling or collecting plane tickets. In reality, there are often some advertisements or boring notices on the back of the boarding pass of many airlines. Postcard plane tickets exploits the back of boarding pass to combine the boarding pass with postcard, so that we can write something for ourselves or close people and mail out feelings that we want to share.