He could be irked, could blame his youth and pout until Sheppard gives in. There are all sorts of options at this point, but he's surrounded by alien technology in a completely different galaxy, which never gets old, no matter how many times he goes through the gate, and as much as he wants this Air Force major to take him seriously instead of blowing him off like an annoying little kid, the fact that they are currently sitting in an alien spaceship makes him grin sheepishly when Sheppard radios the control room.
"Flight, this is...Puddlejumper. We're go for launch."