How do you say

I bought a new dress to wear for the trip.

..in Chinese?

我买了一件新衣服,准备去旅行穿。

wǒ mǎi le yī jiàn xīn yī fú , zhǔn bèi qù lǚ xíng chuān 。

How do you say "They’re planning to travel to Hainan next week." in Chinese?