it seems like it's more common when the flights are from the US. I also don't get asked when using airlines over in Asia, but get asked pretty often when flying from the US
The ask:thailand community, consisting of multiple Q/A groups with over 100,000 members, powers this platform. It is not an official government resource. Our members actively contribute to this resource, and while we strive for accuracy, we cannot guarantee its complete reliability. Assistance to travelers is provided as a community service.