Lanes & Planes shows you information about events & fares directly when making a hotel booking.
Mostly hotel prices increase if there are huge events or fares in the city. At first sight you will see when the event starts and when it ends.
You see directly why some travel dates are more expensive than other travel dates. Therefore availabilities might be rare and that the hotel might be sold out soon. You can inform your colleagues about it so that they will know it for their booking as well.
You have a manager approval? Based on this information the manager will see why coworkers might have exceeded their travel policy.