Siri can't do anything... (iPhone 6)
At all.
"Remind me to (something)"
"I'm sorry I can't do that."
"Set an alarm for (time)"
"I'm sorry I can't do that."
"Play my music"
"I'm sorry I can't do that."
Restarting the phone fixes the problem for a short amount of time, but after a while it goes back to the same thing. Every command ends with Siri telling me, "I can't do that."
iPhone 6, iOS 9.2