“…The authors observed that the academic research about the products and services offered by the airline companies was mostly conducted with SERVQUAL-based surveys (Aydın & Yıldırım, 2012;Başfırıncı & Mitra, 2015;Chou et al, 2011;Du et al, 2012;Farooq et al, 2018;Ganiyu, 2017;Hapsari et al, 2016;Huang, 2009;Hussain et al, 2015;Hussain, 2016;Jiang & Zhang, 2016;Kağnıcıoğlu & Özdemir, 2016;Leong et al, 2015;Pakdil & Aydın, 2007). As another observation, travel review and rating sites focus mostly on accommodation businesses (Banerjee & Chua, 2016;Bayram, 2017;Cezar & Öğüt, 2016;Doğan, 2017;Hu & Chen, 2016;Min et al, 2014;Neirotti et al, 2016;Pacheco, 2016;Raguseo et al, 2017;Sparks et al, 2016) and food and beverage businesses (Bertan, 2016;Cheng & Ho, 2015;Dalgıç et al, 2016;Doğan et al, 2016;Erdem & Yay, 2017;Eren & Çelik, 2017;Kim et al, 2016;Taştan & Kızılcık, 2017;Zhu et al, 2018).…”