Seats are a special part of air travel because if you're traveling with family or friends, you'll usually want to sit next to them, not a stranger. That's why you can choose your seat in some classes. In economy class, you can't, but if you purchase an extra service, you can. You choose a seat when you buy your ticket. There will be an option for this, and if your class doesn't have seats available, you'll have to purchase the extra service. 

If you purchased a plane ticket, it's normal to want to refund or cancel your ticket—it's much more common than you think. Refunds will only be granted under certain conditions; the amount of your refund will depend on the fees, duties, and taxes. The amount will be calculated and reimbursed using the payment method used. Finally, you should also know if your ticket is refundable. You can find this in the terms and conditions in your purchase confirmation. To cancel a ticket, you have a maximum of 24 hours before your flight. 

To do this, you can print it at home using the link on your receipt. The brochure will be available for you to download and print after your ticket has been issued, up to 90 days after your trip. To download it, you can go to the company's official website and use the link provided.