[Context fills in Waver's lack of knowledge of what bending is. Magic, a specific kind that belongs only to Zuko's world. When he speaks, Waver's voice is calm, and most importantly, genuine. He knows how easily this could sound flat and fake.]

Thank you, and I am sorry for your lost.

[But he moves on at a clip, because dwelling is hardly worth it. Emotions are best channeled into actions in moments like this:] There will likely be a plan of action to deal with this matter in the up coming days. Powers and items weren't the only things taken - Miss Alice Lidell has been kidnapped.