If you're not in a hurry, never book in this airline. They have the worst custumer care services. If they cancel your flight for whatever reasons they have, you won't be able to get a refund of your money. They will reason out that it will take 2 to 3 months for processing and there is no guarantee that you will get a refund, in the end of a long convo via chat, they will insist and keep insisting that you put it into credit. You won't be able to talk to them personally, only in chat.