Jacquelin: Ah, where am I?
Sheelah: Excuse me, do you need any help?
Jacquelin: I want to go to the Science Museum. But I've been lost for the past few hours, and I can't use these ticket machines.
Sheelah: Uh, well, just press this button of the ticket machine, then, get on the train at platform number four.
Jacquelin: All right, oh, and how often do the trains come around this time of day?
Sheelah: Usually they come about every 6 minutes.
Jacquelin: Ok, and where do I get off the train?
Sheelah: Get off at State Street Station, 3 stops from here.
Jacquelin: Ok, I got it, thanks for your help.
Sheelah: No problem. Good luck.
Sheelah tells Jacquelin how to use the ticket machine and how to get to the Science Museum.