Matthew 14:15

‘And when even was come, the disciples came to him, saying, “The place is a wilderness, and the time is already past. Send the crowds away, that they may go into the villages, and buy themselves food.'

The crowds spent the day listening to Jesus, and as evening approached, the disciples became concerned. The crowds had come a long way and would be hungry. And they were a long way from home. The usual mealtime had already passed. So they were going to need provision, and here they were in ‘a wilderness'. The only hope for them therefore was to scatter among the surrounding villages in order to buy some food, however little. So they called on Jesus to dismiss the crowds for this purpose. It was an act of compassion towards the crowds, being carried out by men who could see no other option.

Note the reference to villages. They are well away from the larger cities and towns. It was to avoid them that Jesus had come here.