Girls: If you like a guy, how do you respond/act during a conversation?

If you like a guy, how do you respond/act during a conversation? Do you smile a lot, talk slowly, giggle, what do you do?

I'm not asking for any signs like touching or hitting

Thanks!

Attentive, eye contact, smiles, a little more closeness. And I look for opportunities to talk to him. And I reference previous conversations in ways that show I was listening and remember what he said "I watched that tv show you recommended, and you were right, it is hilarious!" "You said you are looking for a good XXX in the area, have you heard of YYY? I hear good things about them."

im usually observing how he is behaving.

The one thing I always pick up on when a girl likes me is that she's laughing/smiling a lot and playing with her hair.

I like a date that involves a little walking. Maybe just from a parking garage in the city to the restaurant on the corner. After the date, on the way back to the car, I slip an arm around her. Does she tense? Does she keep her distance? Or does she meld into my side? The more body contact the more she likes me. If she leans on me I know a kiss is welcome.

I tend to laugh/smile alot, joke around with him. Mostly if I'm really feeling him, he has to be the one to make the first move because I'm usually kind've shy. Lol.