(Japanese auditions, only if you want to be in the Japanese version it, you don't have to be Japanese but just know how to pronounce it.):

First line:

(a line from the trailer script)

Nani, Rira-chan?

Second line:

(a line from episode 1's script)

Rira-chan, jitsu wa watashi wa School Idol Club ni sankashimashita.

(English auditions, if you are someone who can speak audition or knows how to pronounce it):

First line:

(a line from the trailer script)

What is it, Rira-chan?

Second line:

(a line from episode 1's script)

Rira-chan, the truth is.. I've joined the School Idol Club.