For your reference as following: 1．” who only work in houses not in restaurant” for my understanding, do you mean those selling food in their own houses or rented houses without a business license? If yes, for those waiters working in such condition, may be you can call them “服务员”, or just to say “在里面工作的人员”. 2.” I buy airplane ticket from online shopping.”我在网上买的飞机票 or “我上网买的飞机票”. 3. The opposite of 故意in Chinese is 无意 or 无心 or 意外. Hope could be helpful :)

“How to say The waiter who only work in houses not in restaurant“ ？？？ What do you mean? Maybe you mean 仆人， servant or 保姆，nanny, housekeeper or 管家，housekeeper, butler I buy airplane ticket from online shopping. Maybe you mean: I always buy my aeroplane tickets online. 我总是在网上买飞机票。 故意 antonyms: 偶然，不小心，意外，