Swiss Air currently has headquarters in Geneva and Zurich from where it serves the entire world. The airline is a member of the Star Alliance and provides a wide variety of in-flight entertainment and eating options because it is owned by the German aviation powerhouse Lufthansa company. You should contact the Swiss Air Bangkok office in Thailand with any questions you have about making a flight reservation.
https://airlines-office.com/swiss-airlines/swiss-air-bangkok-office-in-thailand/