How to keep a conversation going?

[Charlie]

Basically, there is this girl that really like from my church. I usually see her once or twice a week and we talk a bit - not lots though. I have never chatted to her on Facebook before however I really want to, to be honest. She liked my latest status update but not my profil pic (however she didn't seem be online that day) Would it be weird for me to randomly message her this about helping children's groups: hi (name)
"I am doing something next weekend so I have to help this Sunday, have you got an email about groups?"


If she only replies with basically a yes or no answer what should I say next to keep the conversation going? Should I only msg her when she is online?

[Marina Vazquez]

Don't ask her that if you're interested how about hanging out with just her and not making it seem like business, start a normal conversation saying hey and get to know each other and then bring up we should hang out one day after a couple days of talking to her

[James]

Read up on current issues and news etc