Japanese Airline wants single girls but why?

In the Nation a Thai English newspaper there was an advert from JAL a Japanese Airline is looking for new airline staff. They asked for young Thai girls with good knowledge in English and all the normal qualifications like cute and tall. But one thing that brought my attention was that they need to be single.

We decided to write them and ask them why you have to be single. Hopefully they write back and answer the question and we let you know as soon as they do.