Why can I not order a new ride after 10 PM and before 7 PM? - Hurm

Why can I not order a new ride after 10 PM and before 7 PM?

Many of our taxi companies do not have any personnel in the office at night and have nobody that can schedule new rides. They do have taxi drivers working at night, so if you do need a taxi after 10 PM you can still order a HURM taxi as long as you order one before 10 PM.