2 sentences for 辦 (bàn — to purchase)

1. 我们办个订婚派对吧。

   wǒ​men bàn ge dìng hūn pài​duì ba.

   Let's have an engagement party.

   Source: OpenSubtitles

2. 我为几个密友办了晚宴。

   wǒ wèi jǐ​ge mì​yǒu bàn le wǎn​yàn.

   I gave a dinner party for a few close friends.

   Source: CCMatrix