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Home Page: After creating an account and logging in, Sarah will be directed to this simple page, where she will be presented with the choice of adding a trip or searching the current trips that have already been inputted by other students. Each of the pages on the site contain a navigation toolbar with three links: Home, Edit, and Logout. The "Home" link redirects here.
Add Trip: When Sarah selects the "Add Trip" button, this new page will be displayed where she can enter her personal information and the details of her upcoming trip. After clicking the "submit" button, Sarah will then be directed back to the "My Trips"/"Edit My Info" page. The "advertising" function has been incorporated into this page; if Sarah would like to search for a roommate, for example, she can post this in the comments section so that others can see that see is searching for a roommate.
My TripsInfo: The "edit my info" link at the top redirects here. (It would probably make more sense to change the name of this link to "My trips"). Here, Sarah can view all of the trips that she has previously entered into the system, and she can also change, delete, or add trips. 
. A list of Sarah's current travel groups is also displayed, and Sarah can create, edit, or delete travel groups as well.
Search: Sarah can search other students' trips by way of name or location. After submitting a search query, Sarah is redirected to the "Results" page.
Results: This page displays all results from Sarah's search in a list and on the map. She can navigate the map by clicking and dragging, scrolling, etc. If she selects a particular student, that student's personal information will be displayed on the page as well.
Pros of Design #2: This design's advantages lie in its simplicity; many unnecessary pages are cut out, allowing for ease of navigation and increased efficiency. User-inputted information is easily editable, which provides more safety.
Cons of Design #2: Since this design is so simple, its learnability may not be very high. Additionally, users might be underwhelmed by the lack of a "bulletin" feature.