Using Java I'm searching for possible routes between two airports. Where some of them should "be possible" I'm getting t's not possible" for every airport search. Test data that should work

AER, KZN

SEA, PDX SAN. LAX

---------prompt-----------

Write a program that will load a graph with the contents of the file Routes.csv

The file is a csv file that contains many rows of three elements (airline code, from airport, and to airport). For this program only the airports are important. The airline code can be ignored.

After the graph is loaded, you will accept input from the console that will consist of two airport codes. Your program will determine only if it is possible to get from the one airport to the other. We will use this program as the base for the next exercise. Your program will generate a response that is either that it is or is not possible.

-----------Routes.csv(exerpt)----------

2B	AER	KZN
2B	ASF	KZN
2B	ASF	MRV
2B	CEK	KZN
2B	CEK	OVB
2B	DME	KZN
2B	DME	NBC
2B	DME	TGK
2B	DME	UUA
2B	EGO	KGD
2B	EGO	KZN
2B	GYD	NBC
2B	KGD	EGO
2B	KZN	AER
2B	KZN	ASF
2B	KZN	CEK
2B	KZN	DME
2B	KZN	EGO
2B	KZN	LED
2B	KZN	SVX
2B	LED	KZN
2B	LED	NBC
2B	LED	UUA
2B	MRV	ASF
2B	NBC	DME
2B	NBC	GYD

-----------java-------------

package p7;

import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

import java.text.ParseException;

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

public class p7 {

public static void main(String[] args) throws ParseException, IOException {

Scanner travelScanner = null;

BufferedReader br = null;

try{

br = new BufferedReader(new FileReader("Routes.csv"));

String line = null;

List airportList = new ArrayList();

while ((line = br.readLine()) != null){

String str[] = line.split(",");

for (int i = 0; i

airportList.add(str[1].trim()+ "," + str[2].trim());

}

}

System.out.println("So you're planning a trip? Let's see your options!");

System.out.println(" For example, if your're going from LA to Vegas enter (LAX, LAS)");

System.out.println(" Let's begin!");

travelScanner = new Scanner(System.in);

String travel = travelScanner.nextLine();

String str[] = travel.split(",");

if (airportList.contains(travel)) {

//is possible

System.out.println("YES! We can tak you from " + str[0] + " to" + str[1] + ".");

//is NOT possible

}else{

System.out.println("We're sorry! It's NOT possible to travel from " + str[0] + " to" + str[1] + ".");

}

}catch(Exception exception){

exception.printStackTrace();

}

}

}