Task: I am planning a family trip to Vancouver, so find an economy class flight for me for a one-way trip from Toronto Pearson International to Vancouver International Airport on December 15 for 3 adults on the Kayak app.
Steps:
Open the KAYAK app.
Click on the Find a flight search box.
Click on the First input box.
Type Toronto Pearson International in the First input box.
Select the first tab Toronto, Ontario ,Canada
Click on the Second input box.
Type Vancouver International in the second input box.
Select the first tab Vancouver British columbia, Canada
Click on the Calendar icon.
Click on the date December 15.
Click on the Apply button at the bottom.
Click on the 2 Travelers tab.
Click on the + icon  of the Adults tab.
Click on the Apply button at the bottom.
Click on the tab Search flights at the bottom.
Click on the tab Search flights at the bottom.