One of the things which helps confidence and can keep conversations positive and upbeat is to remember that to be interesting you have to be interested in the other person.
Put mobile phones away to give each other full attention.
The more courteous you are, the more you will stand out from the crowd.
Also, this should not be a temporary thing that is used to attract someone; you should be this way consistently. That doesn't mean that if you are shy or reserved that you cannot be confident.
Keep in mind that you should be mindful of the things you are asking since prying too soon is a big no-no and you don't want your discussion to come across as an interrogation. Don't talk about things that are negative or that you don’t enjoy or money.