If you’re asking about music, try putting on whatever music you like having on in the background while having a regular conversation. That’s going to be different for everyone.
If you’re stuck on writing the regular conversation and it’s not just about setting the mood, try adding a little something more to the scene. Describe more of what’s happening. Add in some lame jokes (always my fav option) or write about the food that’s being eaten. Always add a little more if you’re struggling to write it because you can always cut it later.