A：这两条裙子，哪个更好看？

Zhè liǎng tiáo qún zi，nǎ gè gèng hǎo kàn ？

These two pieces of dresses, which one looks better?

B：都好看。

Dōu hǎo kàn 。

Both are good.

A：那我应该买哪一件呢？

Nà wǒ yīng gāi mǎi nǎ yī jiàn ne ？

Then which one should I buy?

B：你定吧。

Nǐ dìng ba 。

You decide it.