Draw a rectangular box for the "start" of the flowchart.

Draw another rectangular box for the input of height (h) and write "Enter height (h) in cm" inside the box.

Draw another rectangular box for the input of age (a) and write "Enter age (a)" inside the box.

Draw a diamond-shaped box for the decision point. Inside the box, write "h >= 120 and a >= 8?".

Draw a rectangular box for the outcome "Yes" and write "You can enter the ride" inside the box.

Draw a rectangular box for the outcome "No" and write "You can't enter the ride" inside the box.

Draw an arrow from the decision box to both outcome boxes.

Draw a final rectangular box for the "end" of the flowchart and label it as such.

Connect the start box to the first input box and continue connecting the boxes in sequence until the end box.