This seem to be a point were I usually fuck up. Need some advice to improve my game in this aspect.

An example would be last night, met a girl at a bar, we kissed and walked to the train station, kissed more and parted ways. Got her number.

How do i go on about texting her for a date? When? Maybe some example messages. Usually I will just try to set up the date right away, but this has had low ROI.