I don't even understand this.
I can already ask Google Assistant about my flights, and it works without AC doing anything special.
"OK Google, when is my next flight?"
"Your next flight is Air Canada flight 754 to Toronto which leaves Friday at 10:45 pm."
Similar useful responses for "Is Air Canada 754 on time?"
So not only are they investing in "nice to haves", they're doing it on platform that competes with one that supports everything by default.
I'm not sure if Google supports fare quotes, but I want to stop talking to my phone at work