If the passenger does not speak English. I will look for people to speak their dialect, or if passengers are Chinese people, I would say Chinese with him to make him relax and find a solution.
If passengers do not speak English. I would find someone to help them speak dialects. Or if the passengers are Chinese I would speak Chinese to them. To calm him down And find the solution
If a passenger can't speak English. I can find someone to speak the dialect. Or if a passenger is Chinese. I can speak Chinese with him to calm him down and find a solution.