2 sentences

1. 我需要你的用户名和密码。

   wǒ xū​yào nǐ de yòng​hù​míng hé mì​mǎ.

   I need your username and password.

   Source: OpenSubtitles

2. 请在对话框中输入你的用户名。

   qǐng zài duì​huà​kuàng zhōng shū​rù nǐ de yòng​hù​míng.

   Please enter your username in the dialog box.

   Source: Dong Chinese Dictionary