You need to find the passengers Lucie Bataz and Émilie Prince, and take them
3 times,
The important choice in the first trip is to respond with "Yes, I'd say it's possible" when asked about genetic inheritance. On the second trip, choose "Yes" when asked about choosing a partner. thanks to original wezdog
In the third one, the one that its important, you MUST tell them "Ill think about them", I put the entire conversation of the 3rd trip:
- So is he the lucky guy?
- Eh....
- I... Ill think about it
After the end of the case, when you are out of your cab, there will be an option to call them and agree to help them. I put the conversation:
- Hang Up
- Call Lucie and Emilie
- I accept
And after the last answer the achievement will pop. I put my video so you can see the picture of Lucie and all the conversation