[AHAHAHAHAHAHAHAHA! He isn't promising anything about when she gets back because he has no clue how he's going to react.]

I cannot say that I won't worry, but I won't let it stop me from doing what I must. When it's possible, Prompto and I will be heading to the planet's surface.

[He grimaces and it probably shows in his voice's tone.]

Lady Lunafreya and Noctis are down there as well. Might I ask you to keep an eye out for them while we're all separated?