When he knows you're interested and you want to talk again in the future, you increase your chances of getting his digits. If you have a business card, hand her one and ask for hers.
Set a time to call her so that she knows you're committed to keeping in touch.
Mention something about her to get a conversation started.
This moment is a good chance to talk about something striking you saw in her to let her know she stood out in a crowd to you. When you keep her talking, you let her know that you're interested in who she is. You want to give her the chance to know you, but keep the communication balanced.
Let her know you're interested in what she has to say and make a few jokes to show your sense of humor. Make sure not to linger too long -- you want to keep him interested without being overbearing. After telling her you want to see her again, smile and ask if you can call her and maybe go out sometime.
You can send and receive messages, or request a totally private, live conversation with the person of your choice.
Striking up a conversation and finding out about her is a great way to ensure that you can get her phone number later.Everything you learn in this first meeting will help you out after you get her phone number. Smile and be confident as you say hello and swap names.