Help Write Dialogue, Develop a Character

Looking to brainstorm and plan a story with heavy science fiction related concepts. Someone with a strong imagination and enthusiasm for extreme scenarios wanted. This would involve collaboration via Discord instant messenger. Specifically would like to do dialogue practice to settle the tone for one of the characters and consider outline scenarios I have. Looking for someone who could especially be available at 6pm thru Midnight CST on Fridays but have a generally wide availability.