A girl with a dog is a treasure trove for acquaintance.
She is free, no one distracts her (unless, of course, she speaks on the phone) and you can help her pass the time for her usual business.
The easiest way is to ask questions about the dog. Ask the breed, the name of the dog, if the dog participates in exhibitions and the dialogue will start by itself.
If you do not have a dog, then ask her where it is better to buy and you can give her your number in case she has a dog owner. Then expect a call. This will be a great meeting opportunity. And if you also have a dog, then you can agree on walking the dogs together, because you are already tired of walking with the dog together and you both need new friends.