Whenever you are around that special someone you have allot of interest in, be sure to flirt. Flirting can be done by making lots of eye contact, laughing, smiling, giggling, opening doors, and much more. The basics of flirting is doing anything you can to show the person you like them. Just don't go to overboard and chase them off because your being someone your not.
When your in a conversation with the person you like, show lots of attention. I would make lots of eye contact with them, never look away or at other people. This may give off the impression that you don't like them and that your not interested.
Always laugh smile, and giggle when your looking at them, of coarse at an appropriate time. Doing so will express your happiness and create a friendly atmosphere. Friendly atmospheres will signal that there's good chemistry between the two of you. This will make you extremely attractive to whoever it is your interested in.
If your a man be sure to treat the women your wanting to see like a princess. This is a great way to flirt and show your interest. Open doors, scoot out chairs, and offer her a hand if she needs it. This tactic of flirting will show you are a true gentlemen and will surely land you a date.
Keep in mind to always use good body language when flirting with another person. Never go to overboard with things, be yourself, and have fun.