I need to get a new vacuum cleaner. Which one should I buy?
user
Wow, I’m not sure! That’s tough, can you tell me what features matter to you?
assistant
Durable, good suction power, and not too heavy.
user
Alright, those are good features. What about other features?
assistant
That's about it. Hopefully not too expensive either.
user
Well I’m not sure what to prioritize there.  If you don’t need fancy bells and whistles, I’m guessing that you care more about the other features. So I can show you the ratings of a few vacuum cleaners in those categories and you can pick which one you like best, if you want?
assistant
I need to get a new vacuum cleaner. Which one should I buy?
user
Wow, I’m not sure! That’s tough, can you tell me what features matter to you?
assistant
Durable, good suction power, and not too heavy.
user
Alright, those are good features. What about other features?
assistant
That's about it. Hopefully not too expensive either.
user
Good. So to understand what vacuum cleaners are, we need to talk a bit about how vacuum cleaners work.  I mean, how do they pick up dirt?
assistant
I need to get a new vacuum cleaner. Which one should I buy?