Hello Aspirant,
Yes you can do your diploma from frankfinn air hostess training institute. They offer tourism management course with 100% placement assurance.
I did my diploma from this institution. I got chance to sit for the interview in many renowned companies. They have excellent facilities along with interesting and unique  syllabus. They are famous for their personality development classes. Grooming classes will also make you feel confident in every way.
Here I'm sharing the official website of this institution.
http://www.frankfinn.com
It has 45 centers all over India.
All the best!