他们在网上聊了很久才发现住在同一个城市。

Tāmen zài wǎngshàng liáo le hěn jiǔ cái fāxiàn zhù zài tóng yí gè chéngshì.

They chatted online for a long time before realizing they live in the same city.

有问题可以随时来办公室找我聊一聊。

Yǒu wèntí kěyǐ suíshí lái bàngōngshì zhǎo wǒ liáo yí liáo.

If you have questions, you can come to my office anytime to have a chat.