First of all, let me introduce myself as Wrecked. So the scenario goes like this; I have no problem opening (ok, perhaps a little AA here and there but nothing big) but the thing is, I don't know what to say to go into a routine.

I remember my third set (a two set that eventually turned into a 5 set) ever since attempting to day game. Keep in mind I'm only 17 so I'm restricted to day game for now.

*Approaching a 2 set of school girls*
Me: Hey, it's my sister's birthday coming up in a few days and I just wanted a female opinion on something to get her. Something really good.
Them: Umm, (fluff). Perfume would be nice.
*3 of their friends walk over to see what's going on*
Me: Haha, you guys seem like fun people. I'm gonna play a little game with you guys.
Them: Wait. So was it actually you're sister's birthday? (Notice the suspicion? I don't want this...)
Me: Yeh of course. (Obviously lying here)
*Proceeds to 5 lies game and then ejects*

See how I went into the routine after the opener? "You guys seem like fun people, I'm gonna play a little game with you guys". Is that how you would generally go into a routine of some sort? Is there perhaps a better way to go into routines?

TL;DR
What's a line I could use to go from opener into routine?

_________________
By the time you read this, ninjas will have stolen your wallet.

I actually am wondering the same thing. I'm going through Rules of the Game right now and the transition Style has listed out has the PUA pretending to leave, but taking no more than one step before he "spontaneously" notices something to go into the routine with.

So take the ring routine for example, pretend to leave, then take one step, and then turn back and say "oh by the way, I just noticed that you have a ring on. Is there a reason why you wear it on that finger..."

This has worked for me, but it feels weird and sometimes I have already lost interest in the girls and it seems like by the time the opener comes to an end, they are expecting to leave, and so the routine and the opener actually feel disconnected.

Anyone else have advice?

as soon as you got the answer to the opening question, you dropped the subject which raised a bit of suspicion that you didn't really give a shit about their answer. PUA: oh yeah, what kind of perfume? not that horrible brittney spears toilet water.
them: no, no, maybe some blah, blah, blah
PUA: oh really? where do i get that from?
them- ...blah blah
PUA- is that what you wear?what perfume do you wear?
and continue on this thread for as long as it takes to get them talking with you. build up a little rapport with the opener. get them responding to you, keep it light and friendly. then once they have some comfort with you, go into the routine. there is no single line from the opener to the routine, it takes a conversation.

I mostly run night game n go to clubs...so this may work a lil dif for you. The routines in ky opinion get used after I have gained some comfort, n with the cube I use it as a qualifier. Ie. After fluff talk, "Hey I wanna run a personality test on you. I use it in basically everyone I meet because it helps me gauge who they are as a person. Sometimes you talk to someone for ten minutes just to realize you should've stopped at 2. This helps me weed out the personalities I don't like, so if I don't like yours, I will say nice to meet you and walk away. Still wanna take it?" At this point they are intrigued, but know they really are being tested. Also, my idea with routines is that it can build a connection n give u a great way to kino quickly. I don't like to lead with them, just pull out different ones when I wanna add a little fuel to the fire. Depending on the situation, sometimes I stack a couple routines together, get her crazy excited n go from there. Sometimes that isn't necessary. After you stay at it for a while, you will FEEL when u need to n when u don't. The key is to use them to escalate the situation. I have a feeling you run routines quick then don't know where to go right? If you just open build some attraction, THEN run the routines while escalating kino I think you will be more successful n it will be easier to close.

Thanks for the input guys. I'm gonna try and implement kinorc's advice into my interactions.

_________________
By the time you read this, ninjas will have stolen your wallet.

Sounds like you were jumping the gun my friend. Try setting it up better and have a few follow up questions to what ever they recommend next time.