Which airline and website book online ticket from Chengdu airport to Jiuzhaigou?

"From Chengdu to Jiuzhaigou, you can fly there directly to Jiuzhaigou Airport where you can take the direct bus for Jiuzhaigou."

Please advice which airline and website (book ticket online) to take the flight from ChengDu airport to Jiuzhaigou airport? Thanks so much

And please advice which company bus that i can take from Jiuzhaigou airport to Jiuzhaigou? where i can buy bus ticket? how much and how far? and Thank You So Much