\begin{tikzpicture}
  \begin{class}[text width=7cm]{Flight}{0,0}
    \attribute{flightNumber : Integer}
    \attribute{departureTime : Date}
    \attribute{flightDuration : Minutes}
    \attribute{departingAirport : String}
    \attribute{arrivingAirport : String}

    \operation{delayFlight ( numberOfMinutes : Minutes )}
    \operation{getArrivalTime ( ) : Date}
  \end{class}

  \begin{class}{Plane}{11,0}
    \attribute{airPlaneType : String}
    \attribute{maximumSpeed : MPH}
    \attribute{maximumDistance : Miles}
    \attribute{tailID : String}
  \end{class}

  \association{Plane}{assignedPlane}{0..1}{Flight}{0..*}{assignedFlights}

\end{tikzpicture}