why does delta have no seat assignment

IMAGES

1. No seat assignment, at gate? : r/delta

   

2. When your seat assignment is randomly changed with no explanation : r/delta

   

3. When your seat assignment is randomly changed with no explanation : r/delta

   

4. Delta Exchanges Blocked Seats For In-Flight Meals

   

5. Delta Airline Seat Size

   

6. Delta Airlines Seat Selection: Everything You Need- Fee, Process