Hey Franck! If you can shoot me a friend request on Discord I’d love to help you out and also confirm it’s not a bug that we’re missing. Name is j.hol if Duscord doesn’t work I’d be happy to share my email address
Viewing post in Lost in Trainslation jam comments
The other comment gave me the answer, I was just dumb and didn't understand I could select the other line of dialog. When you talk to the ticket office, I thought that the second line of your character's dialog (the one a little bit grayed out) was her "internal thought", just something that the character is thinking, and you have to find a clue somewhere so they understand that it's the right choice and will choose it by themselves. I didn't notice the arrow on the left, I didn't understand I could choose between the two lines.