How does someone use cause-and-effect conjunctives in Chinese?

Fill in the following blanks with the proper Chinese conjunctives.

Lǐ Míng: Zhāng Lì, nǐ zuìjìn jiàn Hán Méi méiyǒu? 李  明 :张    丽,你 最近 见  韩  梅   没有?

Li Ming: Zhang Li, have you seen Han Mei recently?

Zhāng Lì: Méiyǒuā, tā qǐngjià le, …