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Goal:   Write an application that allows the use to enter the airport of origin, airport of destination and day of week. The application outputs all of the relevant flights, including departure time, arrival time and price.

Input CSV File:   A comma separated value file with the fields origin, destination, day, departure, arrival, price: flights.txt.

Input Textboxes   (1) Airport Code of Origin, (2) Airport Code of Destination, (3) Day of Week. Include labels for each textbox.

Output Textbox   A multiline textbox that outputs the time of departure, time of arrival and price for each flight that matches the input criteria. Set the Multiline property to True for the output textbox.

Submit Button   When the submit button is clicked, execute an event handler that reads the input file flights.txt, selecting the files that match the input criteria, and displaying them in the output textbox.

Event Handler Pseudocode

Create StreamReader object.
While not at end of file
    Read line from file using ReadLine method.
    Get fields array from line using Split method.
    Get origin, dest, day, departure, arrival, price
        from fields array.
    If origin, dest and day match values in input 
        textboxes Then
    
        Write formatted departure, arrival, 
            and price to output textbox.
    End If
End While
Close StreamReader object.

• Important: be sure to use a fixed width font like Lucida Console for the textbox when outputting formatted data in columns to a multiline textbox.

• Use the AppendText method of the multiline textbox to append strings created with String.Format like this:
  outputLine(String.Format("{0,-10}{1,-3}{2,5:0.00}",
      name, gender, gpa)
  txtOutput.AppendText(outputLine)