Being called sir simon made him grin in a silly manner. He liked the guy, he knew how to crack a joke. That was good especially to keep mind of dark situation possible. Especially the what ifs, like what if this is a evacuation because there will bombs fall on their heads. It was just a random idea, there was surely a logical explanation.

A nice logical.
A boring explanation.

No he wasnt totally exited because something mysterious was happening...That would be wrong, if it was a dream it would be fine.
''Thank you sooo much for having a short name, I am sure I can remember Kai. Or shall I call you sir Kai.'' He said really happy about it, usually it was really easy to forget names, sometimes he didnt paid attention or he nicknamed some of his peps or was to busy thinking about the countless name of his story characters to add now names of real people to the list.

Nodding as they walked listening to the other response. '' Well Kai, it sounds like a start of a adventure. A mystery adventure. And dont worry the personal in the hospital knows me well. I come there pretty often around. Knowing the layout pretty well, including where the nurses keep the cupcakes....''

Felling there was a need for some more explanation he added. ''My younger sister is sickish and as the man in the house I take care of her and mother.''He smiled even if the smile was more away and more acted as a mask than anything. Feeling he already said a lot more to a practical stranger than he intended. On other hand there was little harm to it. They will find their families and probably never again see each other. Or Sim will not have ever the time to invest into a new friendship. Or at good last it was a dream and he could enjoy himself. 
''Want a hug..........erm... just to warm you up you know.'' He said remembering he did gave a promise and he should hold it breaking promise was a really bad idea, especially the random ones given out aloud. He opened his arms and tilted his head, hoping the question didnt sound too weird.