I'd say, similar to 'Mumbai Bandra Terminus' and 'Delhi Hazrat Nizamuddin', please change the station name to 'Patna Danapur' and 'Surat Udhna', instead of putting main city name in bracket in the name of the train. Train name should remain Udhna Danapur Express.
Likewise, make it mandatory to prefix (or suffix) suburb station/secondary station with name of main city as many people actually do not recognize them. So change station names to Thiruvanthapuram Kochuveli, Varanasi Manduadih, etc.