I've been asked a few times over the past couple of weeks about sample "asks" for informational interviews. The most important thing to remember is "Don't overthink it. Just do it."
Here's an article that might help.
And here's 2 sample texts. Some areas are going to need to be customized.
“Hi [First], I hope this message finds you fabulously. I see you’re working on PMO at Amazon after being at Walmart. I would love to learn more about your career and experience at both companies. What’s your availability for a quick phone call or coffee?”
"Dear [first name], I’m a [job title] who works in [your location]. I’m reaching out because [reason why you want to speak with this person]. I’d love to learn more about [two or three things you’d like to learn from the person]. I’m sure you’re busy, so even 20 minutes would be appreciated. Thanks so much, [Your name]
Will every one you approach respond positively? No, probably not, but we have to try. Sometimes its the method of communication we use; sometimes the ask itself. Try an email or text ask rather than a telephone call.
Generally speaking, most people want to help. They just don't want to be put in an uncomfortable situation. All we're asking for is a little bit of time to talk; nothing more. Making that clear in the beginning makes it easier for people to say yes.