Is it possible to cancel flights and get a refund?

Related questions

1. Do I get United miles for flying Singapore Airlines?
2. Does Singapore Airlines have inflight entertainment?
3. What is the cancellation fee for Singapore Airlines?
4. How many miles do you need for a free flight on Hawaiian Airlines?
5. Can I choose my seats on Singapore Airlines?
6. How many planes Singapore Airlines have?
7. What are not allowed in hand luggage Singapore?
8. Does Singapore Airlines have Boeing 737?
9. When can you choose seats on Singapore Airlines?
10. What items are forbidden in hand luggage?

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20. #penalties
21. #ticket