Yes, of course, and we could also call reservations to request a seat assignment too.

But in seriousness, I prefer self-service options and the web has matured enough that these problems shouldn't exist.
The process I listed is a little long but it also helps pull the records for the other connecting flights.

I do like being able to text an Alaska agent for things I can't do online but that only works when using a U.S. number.