I'm definitely not suggesting making up some fantastical story in the 'PUA' style, or using a canned opener, or generally treating the girl as some machine that has a set of locks you need to open. At some point you have to have some shit to talk about. When you aren't good at talking to new people, you are nervous and 'in your head' which reduces your involvement with the conversation and amount you have to say. Sooo you need a plan. You need material. Simple (positive!) situational stuff is great.

Plus, if you have a plan (material!) you will come across as more confident because you aren't making it up on the spot.

Also, girls rarely 'help' you unless the environment is social. A friend's party is easy. She will 'help' you; you are already vetted in lacking creep. Bars are moderately easy. Just act like you are awesome. Salsa is easy as they are there to meet people. A cute girl on the train platform will not help you. You gotta be god damn don juan.