Air Hostess

The usual candidate profile for freshers is as mentioned below.
Age: Between 18 and 27 years
Minimum Height: Men - 170 cms and Women - 157 cms
Weight: In proportion to height
Educational Qualification: HSC (10 + 2). Candidates who are appearing for their HSC examinations can also apply
Physical features: Pleasing personality, clear complexion (scars, pimples and blemishes not acceptable) and good eyesight
Marital Status: Unmarried
Language skills:Fluency in English and Hindi. Proficiency in a foreign language will be an added advantage.
Interactive skills: Excellent communication and good interpersonal skills
Nationality: Indian citizens only
Passport: Must possess a valid Indian passport or should have applied for a passport
Mandatory Documentation : Must possess a Pan Card and Aadhaar Card
You may opt to join training institutes if you feel so but in my opinion, you do not require any training to get hired as a cabin crew, all your training is conducted by the airline itself. Each airline has its own SOP (Standard Operating Procedures), wherein certain compulsory procedures are same in all the airlines whereas the supplementary procedures vary drastically. Most of the Institutes which provide training for cabin crew do not have enough infrastructure to conduct the training in a realistic environment. DGR (Dangerous Goods), AVSEC (Aviation Security), Evacuation, etc., are some of the basic and most important training, which only an airline can conduct in a realistic manner. As it requires proper approval from the designated authority and real-time infrastructure which only airlines can afford. So, you should basically work on your looks, language, communication skills and preventability, to walk-in for any cabin crew interview.

The usual profile for a fresher is as under:
Age: Between 18 and 27 years.
Minimum Height: Men - 170 cms and Women - 157 cms.
Weight: In proportion to height.
Educational Qualification: HSC (10 + 2). Candidates who are appearing for their HSC examinations can also apply.
Physical features: Pleasing personality, clear complexion (scars, pimples and blemishes not acceptable) and good eyesight.
Marital Status: Unmarried.
Language skills: Fluency in English and Hindi. Proficiency in a foreign language will be an added advantage.
Interactive skills: Excellent communication and good interpersonal skills.
Nationality: Indian citizen.
Passport: Must possess a valid Indian passport or should have applied for a passport.
Mandatory Documentation: Must possess a Pan Card and Aadhaar Card.
The training institute shall guide you further for the interview. It is not at all expensive to pursue the dream of becoming a cabin crew. All you need to be is personable, presentable, good in communication and outgoing. Additional advantage can be gained if you know some foreign language.
Go ahead with it.

Yes, you can.
The minimum eligibility is just class 12th and at least 18 years of age.
Candidate profile for freshers:
Age: Between 18 and 27 years.
Minimum Height: Men-170 centimetres and Women-157 centimetres.
Weight: In proportion to height.
Educational Qualification: HSC (10 + 2). Candidates who are appearing for their HSC examinations can also apply.
Physical features: Pleasing personality, clear complexion (scars, pimples and blemishes not acceptable) and good eyesight.
Marital Status: Unmarried.
Language skills: Fluency in English and Hindi. Proficiency in a foreign language will be an added advantage.
Interactive skills: Excellent communication and good interpersonal skills.
Nationality: Indian citizens only.
Passport: Must possess a valid Indian passport or should have applied for a passport.
Mandatory Documentation: Must possess a Pan Card and Aadhaar Card.