What does Matthew 15:29 mean?

But he answered, “It is not appropriate to take the children’s bread and throw it to the dogs.”

But she said, “Yes, Lord, but even the dogs eat the crumbs which fall from their masters’ table.”

Then Jesus answered her, “Woman, great is your faith! Be it done to you even as you desire.” And her daughter was healed from that hour.

Great multitudes came to him, having with them the lame, blind, mute, maimed, and many others, and they put them down at his feet. He healed them,

so that the multitude wondered when they saw the mute speaking, the injured healed, the lame walking, and the blind seeing—and they glorified the God of Israel.

Jesus summoned his disciples and said, “I have compassion on the multitude, because they continue with me now three days and have nothing to eat. I don’t want to send them away fasting, or they might faint on the way.”