It seems real enough. [But he can't say for certain that it is, so he won't. A person less about standing on ceremony than Sebastian would probably kneel to be more on Lulu's level, but to make up for it he turns to give her his full attention, hands neatly clasped behind his back.]
May I ask if you have had anything about it explained already? Elucidating will be easier if I know. [How many times will Sebastian volunteer himself as welcoming committee despite not needing to? An endless amount, it seems.]