There are different commands that can be used to interact with Google Assistant.

Here are some examples:

Turning your Dyson machine on and off

"Hey Google, turn on my purifier"
"Hey Google, turn on night mode"
"Hey Google, turn off humidification on the purifier"

Changing fan speed

"Hey Google, set the bedroom fan speed to 7"
"Hey Google, turn up the bedroom fan speed"
"Hey Google, decrease the bedroom fan speed by 3"

Changing oscillation settings

"Hey Google, turn on oscillation mode"
"Hey Google, set oscillation to wide"
Changing temperature settings

"Hey Google, make it warmer in here"
"Hey Google, make it cooler in here"
"Hey Google, turn off the heat"

Controlling your Dyson robot

"Hey Google, start vacuuming"
"Hey Google, stop the vacuum"
"Hey Google, return the vacuum to the dock"