Goal: I want size 9 adidas high-top style shoes, so hunt for them in the eBay app.
Steps:
action: action_type: click
step_instruction: Click on Filter at the top right of the screen.
action: action_type: click
step_instruction: Click on US Shoe Size in the middle of the screen.
action: action_type: scroll
direction: up
step_instruction: Scroll down 
action: action_type: click
step_instruction: Click on number 9.
action: action_type: click
step_instruction: Click on show 352 results at the bottom of the screen.