To
               The HOD
               [College Name]
               [City Name]
Date: Date/Month/Year
Subject- Regarding Thesis Topic
Respected Sir/Mam
                   I, [Student Name], [Semester], [Batch] Requesting you to Kindly grand me more time to finalize my thesis topic as I could do more research and decide better,
Kindly allow me.
Thanking you
Yours Sincerely Â
[Student Name]
[Roll Number]
B.Arch
Semester [Semester]
[Batch]