I don’t mean to be presumptuous, just telling what worked for me.
I’d taken a liking to a checker at the local grocery. We exchange some banter on each visit and do a mild amount of flirting. I wanted to take it up a notch and arrange a date with her.
The next time I was in the store I filled my basket with food items and tossed in a hallmark card on top. She scanned the card first and handed it to me. While she was processing all my purchases I filled out a message on the card asking for a date and signed it LOVE, Greg, leave a message 763-2391. I put the card into the envelope and licked it shut. When she turned to take my money I looked closely at her name tag and printed her name on the front of the envelope. As I walked away from the check out line I handed her the card. When I got home the message light on the answering machine was blinking.