Here are some phrases for introducing yourself in English.
See also : Free-English-Study : Introducing Yourself
1. I'm John.
I'm Jackie. (Use first name in informal situations)
2. I'm John Kennedy.
I'm Jackie O'Neill. (Use full name in business and formal situations)
3. (It's) nice to meet you.
(It's) nice meeting you.
(It's) good to meet you.
4. Nice to meet you too.