Provide the theme summaries for the following conversation: 

Henry: What's the entrance code?
Jessica: To the lab?
Bobby: 7898
Henry: This is what I thought but it doesn't work
Bobby: That's strange
Bobby: It worked yesterday
Jessica: They sent us an email yesterday that they would be reseting the system
Henry: Oh no! Today?? 
Jessica: I'm afraid it's today
Jessica: But maybe you can talk to the administrators to let you in if it's urgent

Summary: 
Bobby gives Henry the entrance code but it's invalid. This is due to today's reseting the system but Henry can still contact the administration.