The last two panels show a conversation between these two characters.

In manga time flow and reading direction are intertwined.

Therefore it‘s important to arrange the speech bubbles in the proper order to communicate the events clearly.

In the upper panel you can see that the dialog proceeds in turns.
The tails of the speech bubbles play a very important part here, as they show which character each bubble actually belongs to.
The tail of the third bubble is inverted; it signals that it „skips“ the character next to it and belongs to the one farther away.
It is useful when a panel has lots of speech bubbles and you want to make it not impossible to follow.

The lower panel shows a bit of action between these characters; body language.
Always remember that characters can not only talk, but also express themself with their bodies. Make use of that!