2 sentences

1. 大爷，您请坐在这儿吧。

   dà​ye, nín qǐng​zuò zài zhè​r ba.

   Sir, please sit here.

   Source: Dong Chinese Dictionary

2. 没关系，请坐。

   méi guān​xi, qǐng​zuò.

   It's okay, have a seat, please.

   Source: OpenSubtitles