Rulvin would look at the people as they left for the capital, thinking that it would probably be better to make sure no danger comes to their harm.

"I think we should keep them some more company just so they make it, who knows what else they could encounter out there." 

Thirch nods in agreement 

So you both agree to accompany them  Rav and Rosissa assuming you all are going with.

Yes 

You all leave with the village both from Werton and now Conoal. heading for the capital which about a 7 day by walking. We could stop by Yilroph in-between routes maybe get some supplies. As this going on you may interreact with the world as you please. The area around the open sands it is a warm but not too hot out today little wind but nothing drastic. 

Rav looks for plants he can use to craft potions and poisons along the way (16 Nature)

Roll investigation or nature check

Rosie looks around for animals to talk to.

Nature check. As for Rav You find some cactus that have a poison on the inside you can extra into a vail or lace on your weapon. There is also some dessert flower which is prickly with purple buds which may be used crafting potions. 

Thirch will scare of anything he thinks is a "threat"

Rav carefully extracts the poison into a vial to save for later and carefully picks some desert flowers to make some potions when he has down time. He returns to the caravan and asks his companions "How are we fairing? Everyone doing ok so far"

Thirch starts to say something but stops and keeps walking and just nods

"I'm doing quite fine, a little warm from the weather but nothing I can't manage."    Rulvin comments, wanting to dig for some water reservoirs under the sand.

you can attempt to I'd say nature check or survival

With your survival check u saw in the dice bot. You will manage to find some water under the sand not a whole lot but a good amount.

I proceed to collect the water i found and filled up my waterskin, heading back to the ground after having gotten some good water.