Have you booked a flight on EVA Air to go to your desired destination? After that, you act appropriately. You are able to cancel your flight with Eva's Airlines and get a reimbursement. You won't be assessed an Eva Air cancellation fee if you cancel your ticket within 24 hours of making your reservation.
If you purchase a plane ticket for travel to or from the US and decide to cancel within one day after purchasing, no cancellation costs will be subtracted from your refund by Eva Airlines. Only those who have refundable tickets are eligible for a complete refund, per the Eva’s Airlines Cance

When you modify your itinerary, you must update your flight. Loganair's flight change policy allows you to adjust your flight date based on your itinerary. If you modify your flights within 24 hours and your reservation is confirmed 7 or more days before departure, the airline will not charge you. As per the Loganair flight change | date & name correction, you may update your name on the logan air reservation ticket.
https://flightcancellationpolicy.com/logan-air-flight-change