Does United Airlines have assigned seating?

Related questions

1. How do I complain to United Airlines?
2. Where is United Airlines in Frankfurt airport?
3. How many countries does United Airlines fly to?
4. What aircraft does United Airlines use?
5. Is United Airlines a US company?
6. Does United Economy include seat selection?
7. How many passengers does United fly a year?
8. What is United Economy seating?
9. What does the United Airlines brand mean?
10. How many destinations does United Airlines fly to?

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21. #seating