Puzzled bro......try these and see if it helps ok

1) watch a lot of english movies , programmes, news, listen to talk radio Radio and debates. AND try to remember slangs and accents and comon conversation ways between two Americans like ...you ask .Q: Hey hows it goin buddy?? person answers A: Not much and you?...and you say...A:....I,m allright, can't complain man, you know.      . ............ work on catch phrases and greetings...short ones .that american use when they meet....its easier to start like,  whats up?....Hey there......., whats cookin bro?... Ill catch ya later, see ya, Im all set..... are y'all set?? whats goin on bro..??? kool Kool.  similar catch phrases to get along that everone is familiar here. Then another thing watch the local teams and follow the games and understand it ....good way to start a conversation with anyone...........

No matter where you work you will have American customers and clients so....use your =catch phrases and  greetings to converse with local Americans....and then slowly the rest will follow.........You see bro..got to imerse into the American culture and the language will follow..........But never forget who you are ...PURE NEPALI...OK

Hope this helps.