currently the status' confusing in google calendar where it goes from invited>reminded>confirmed/reschedule. Invited and reminded aren't as clear as they could be. And, there is definitely a need for "completed" after confirmed similar to "not going". We use texts to ask "Did you go?", so this would be the full end to the booking to completion, vs. just booking to confirmed. This could be broadly used with feedback texts that are commonly used by services provided.