I think the ultimate goal is to make the "acceptable entry points" so numerous and the variety of acceptable wordings so broad that you can approach the assistant with pretty much any goal you have in mind and it'll walk you through how to accomplish that.
Imagine if this was a realistic conversation with an assistant:
> "Hey Google, I'd like to order a pizza."
> "Sure, what kind?"
> "Let's see... cheese, pepperoni, sausage... and maybe some green pepers?"
> "Alright. What size?"
> "Hmm, so I need to feed 4 people..."
> "Sounds like a large?"
> "Sure, let's go with a large."
> "Alright. There's a Dominos nearby, I can order that for $8.99."
> "Sounds good."
> "Alright, I've ordered your pizza. Expected delivery in 15 minutes."
No need for the human to understand what the "entry point" is, because you can approach the assistant with pretty much _any_ entry point and it'll give you a useful response. We're still not there yet, unfortunately, and I think it'll be quite a while before we are.
Imagine if this was a realistic conversation with an assistant:
> "Hey Google, I'd like to order a pizza."
> "Sure, what kind?"
> "Let's see... cheese, pepperoni, sausage... and maybe some green pepers?"
> "Alright. What size?"
> "Hmm, so I need to feed 4 people..."
> "Sounds like a large?"
> "Sure, let's go with a large."
> "Alright. There's a Dominos nearby, I can order that for $8.99."
> "Sounds good."
> "Alright, I've ordered your pizza. Expected delivery in 15 minutes."
No need for the human to understand what the "entry point" is, because you can approach the assistant with pretty much _any_ entry point and it'll give you a useful response. We're still not there yet, unfortunately, and I think it'll be quite a while before we are.