[Perhaps if Sanji were less inclined to be so grumpy about leading his charge, he would notice the little red unicorn bounding up and practically crashing into the larger pegasus.]

SANJI! Sanji, who's this? [He spins on Jack, looking intense.] Who're you? You're new in town? [He grins] Sanji, you're helping him? Fantastic!

Is he doing a good job helping you, sir? The duty of the city guard you know, making sure everypony has a good stay in town. [He gets right up in Jack's face] How would you rate your service so far?