\begin{tikzpicture}

\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}