The flight attendant speaks Filipino to the "drunk" passenger. She says, "Malalagnat ka ba?" which literally translates as "Are you going to be having a fever?" ("Do you have a fever?" would be "Nilalagnat ka ba?").
The pen House uses in the plane was supposed to be permanent, but after changes in camera angles and scenes, the penmanship changes, especially the size of the letter P, which suggests that the writing was erased and rewritten.
The airline is "Malaysian Pacific Airlines", and the flight originates from Singapore, but the flight attendant speaks Tagalog (a Filipino language) to the ill Korean passenger, and none of the Asian passengers resemble typical Malaysians or Singaporeans.