What should I say when texting a girl for the first time?

If it's the first time, be polite and give girls a sense of gentleness. For example, hello XXX, are you free on XX? May I invite you to dinner? Don't be angry if the other party refuses. Text him and tell him it's okay. There will be a chance next time. In this way, you will leave a good impression on the girls. Next time I invite her to dinner, it will be very smooth. Come on (be brave)