Regal Tiger said:
But if you can't (say the girl is boring or you're just not as into her or whatever) then just stick to a general structure.
Here is an example of one my more boring closes and how I was able to make it work. Not every conversation is going to pop off the page, especially if the other person isn't pulling their weight.
Me: I'll see your pink Flamingo and raise you a green Dinosaur *smiley emoji*
(She had a pool pic of her on a pink Flamingo. I have one from Australia of me on a green Dinosaur. I actually added it to my Tinder pics specifically so I could make this connection)
Her: Shit- I don't think I can top that!
Me: Its a rare person who can, haha. Nice to meet you Kaity *Pleased emoji* Based on your profile it sounds like you've lived all over the place. What brings you out to Minnesota?
Her: My new job! Are you from MN?
Me: Ooh, thats exciting! Yes, I'm from MN originally, although I did live in Australia on and off for a few years
Her: That's Awesome!!! Why were you in Australia on and off?
Me: It's a long story really; a riveting tale of love, adventure, and the intricacies of immigration policy
(Note that I thought about going for the close here but I didn't feel like it was quite time. If you get someone to bite on an interesting story tease you can close with something like "The only way to do it justice frankly is face to face over a glass of wine" or something along those lines. But she hadn't invested quite enough yet)
Me: You must have had some adventures of your own, growing up abroad. Different city every year type of thing? Or did you end up in a specific place
Her: That sounds like a very interesting story *emoji*
Her: Yeah something close to that lol. I have moved 14 times
Me: Yikes! That must have made it hard to put down roots. Luckily you saved world-renowned Minnesota and its population of handsome Scandinavian men for last *wink emoji*
Me: How long have you been in town for?
(Here I'm prepping for the close, trying to lead this into some type of "I'll show you around town frame." This conversation is starting to drag; its about an interesting topic but it isn't very interesting the way we are conducting it. This girl is responsive but isn't giving me anything to play off of to make it more fun)
*two days of no response*
Me: Uh oh, radio silence... Trapped in a landslide? Abducted by aliens? At this point I can only assume the worst. Blink three times if you need help
(To date this is the ONLY successful followup technique I've discovered that keeps a strong frame for you. Essentially you pretend that something ridiculously implausible has happened to the girl, and that is why she hasn't responded. You are basically implying that the only reason she WOULDN'T respond to you is if something crazy happened, which is a confident sexy thing. It's basically variant on chase-framing as adapted to Tinder, and in my experience it will often garner a strong response from a girl, while also giving you a fun new frame to play with. See below for how this plays out)
Her: Blinking like a crazy person right now! Haha sorry I missed your message

I have been in town since the 6th!
Me: Brand new in town then! Don't worry, if I were abducted by aliens I might forget to check my Tinder messages too *Laugh emoji* I'm putting on my cape and tights and I'll be off to the rescue shortly
Her: My hero *love emoji* I knew moving to Minnesota was a good call!
Me: Just doing my job Ma'am *wink emoji*
Me: Did you know, we have a local custom here in Minnesota to welcome newcomers?
Her: Is that so?! Do tell

Me: Yea, it involves meeting up with a member of the opposite sex for drinks and scintillating conversation. I'd be happy to initiate you
Her: That sounds lovely

Her: Unfortunately I lost my drivers license today so drinks will have to wait until my new one arrives!
Me: Uh oh! Well, I'm sure we can figure something out

What's your number?
Her: XXXXXXXXXX
So, you can see that our conversation got boring, she became non-responsive, and by making it interesting again I was able to pull her back in and close. I took this one as my lover on the first date. Note that this is a LONG conversation by my standards. Ideally I'd want things to be around half this length, although obviously it depends greatly on context. If you find your exchanges are routinely going longer than the above I'd recommend you work on moving things along faster