When someone asks for directions and doesn't thank you, it can feel a little discouraging, but it's essential to maintain kindness and politeness. Here's what you can say:
"You're welcome! If you have any more questions or need further help, feel free to ask. Have a great day!"
Remember, being courteous even in such situations reflects well on your character, and it's always better to take the high road. Sometimes people might be in a hurry or preoccupied, so it's best not to take it personally. Focus on being helpful and friendly to the best of your abilities.