“…According to the related literature review of this study, there are previous studies that used TAM as a base model. Hence, they could be divided into two groups, consisted of technology user acceptance, i.e., the intelligent virtual agent ( Serenko, 2005 ; Chao et al., 2016 ), smartwatch ( Kim and Shin, 2015 ), electronic payment ( Dastan and Gürler, 2016 ), and information system in a mobile phone ( Koç et al., 2016 ), and technology user acceptance of travel and tourism, i.e., includes portable electronic navigator technology ( Peres et al., 2011 ), the virtual agent in restaurant website ( Reza, 2014 ), and social media with luxury hotels ( tom Dieck et al., 2017 ). Therefore, the external variables and belief variables are favorably most studied, following as behavioral intention to use (BI), attitude toward using (attitude), and actual system use (AU), respectively.…”