The easiest way to start a conversation with a girl is by talking about an event coming up. Of course, this will only work if there’s an actual event coming up.
You can ask her if she’s going to the party next weekend, or ask about her plans for the Christmas break.
This is an easy way to start a conversation because the girl will be able to give a response and keep talking. Plus, it’ll lay the road out for you to talk to her once again in the event. If you’re both going to the party, you can wait for it to talk some more.
If there’s no party or special holiday coming close, you can talk about a test or a class you’re waiting for.