What do you talk about?
How to countinue the conversation?
Depends somewhat on your language level.
After you have introduced yourselves and asked about each others work and families, then comes the hard part.
A book you are reading.
A Youtube video you recently watched
What happened on the bus/tram/train this morning
What your kids have been doing that has driven you crazy today
An article you recently read
What you were talking about at work today
What sport you did today
What you did on the weekend
A TV show you have recently watched
Your favourite movie
What you have cooked today, or what you ate today, why you like it, why you don't