The article examines the linguistic, material, and multimodal aspects of professional communication in guided tours in the Himalayas in Nepal. Using an ethnography-informed interactional sociolinguistics, the study analyses the key instances of miscommunication between an American tourist and an ethnic Tamang guide to understand how various identities are invoked by the participants. As the article considers the complexity of working for tourists in the second language in which a worker's competence is questioned, it also recognizes the importance of a range of semiotic resources that tour guides deploy to negotiate professional authority with tourists. Overall, the findings show how individuals manage interpersonal relations and expertise in transnational workplaces to contest and reconstruct dominant social positions and achieve their interactional goals.