There isn't a specific Thai Airways office at Oslo Gardermoen Airport (OSL). However, travelers using Thai Airways out of Thai Airways Oslo office can get help by contacting the airline's customer service department or by going through the general service desks at the airport. Travelers are recommended to contact Thai Airways' global customer care team or visit their website for booking, ticketing, or specific inquiries. The personnel at Oslo Gardermoen Airport may also point you in the direction of the relevant Thai Airways flight-related services if you require any local support.