| https://collaboratory.gse.upenn.edu/sites/default/files/webform/Can%20I%20change%20a%20flight%20I%20already%20booked%20with%20United_.pdf |
| https://collaboratory.gse.upenn.edu/sites/default/files/webform/How%20much%20does%20AA%20charge%20to%20change%20a%20flight_.pdf |
| https://www.console.playblackdesert.com/Community/Detail?topicNo=216158&topicType=12 |
| https://www.console.playblackdesert.com/Community/Detail?topicNo=216181&topicType=6 |
| https://www.console.playblackdesert.com/Community/Detail?topicNo=216142&topicType=24 |
| https://www.console.playblackdesert.com/Community/Detail?topicNo=216078&topicType=11 |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/idoc_p.does-united-offer-compensation-for-cancellations-offerrefundd.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p1.does-united-give-money-for-cancelled-flights-monebackcancellationn.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p2.can-i-cancel-my-qatar-flight-and-get-a-refund-qatarpolicyy.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p3.does-qatar-have-a-free-cancellation-policydetailss.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p4.does-qatar-airways-offer-free-refunds-offerrefundd.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p5.does-qatar-have-a-cancellation-fee-penalties-and-chargess.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p6.whats-spirits-24-hour-cancellation-rule-cancel-within-.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p7.does-spirit-airlines-have-24-free-cancellation-24-hourspiritrefundd.pdf |
| https://efile.cpuc.ca.gov/uploads/sess_08e282ad0af7d482b3b937b47d1e1aae/fuschunks/iatt_p8.what-is-the-cancellation-policy-for-delta-airlinecanceldeltaa.pdf |
