Is "Give me an information about the trip" correct?

Why

Sanvi has correctly applied the sound rule from the university example — "information" genuinely does start with a vowel sound, so her a/an logic itself isn't the problem here. The actual issue sits one step earlier: "information", like "advice" met earlier, is an uncountable noun, and "a"/"an" specifically mean "one" — you only ever use them in front of nouns you could count as a single unit, like "an apple" (one apple). You cannot have "one information" any more than you can have "one advice", so no version of "a" or "an", correct sound or not, ever belongs in front of it at all. Test: notice this is the same gap that made "advices" wrong earlier — uncountable nouns skip both plurals AND the "a"/"an" article, for the identical reason: they aren't thought of as separate countable units. Her friend is right: the problem isn't a versus an, it's that "information" takes no article at all, since it's uncountable — "give me information" or "give me some information".