Ecrire un dialogue pour convaincre ses parents

Sujet du devoir

Bonjour, pouvez vous corriger mon texte et me dire si les phrases sont cohérentes, merci.
Alors voilà la consigne du travail:

Writing a dialogue Appliquez la méthodologie à l'écriture d'un dialogue en anglais:(200 words) sur le sujet suivant:
You’ve just studied the text “Dreaming of America”, imagine and write out the conversation between Stefan and his parents when he tries to convince them to immigrate to America.

Où j'en suis dans mon devoir

“Mum, dad has you heard speak of Immigration in America? Stefan said kindly tone.
“Yes, why?” the two parents answered intrigued.
“Well…, I said to me that, that would be a good idea to make the experience! You think not? Radiantly.
“… What? It’s a joke, I hope!” "It is impossible, we know nothing there, it can be dangerous!" The furious mother added.
"But Mom did not say anything stupid, it's a new country full of exciting things such as skyscrapers, extraordinary animals, beautiful landscapes and modern technology" Stefan exclaimed in an enthusiastic tone.
"But you do not know, it's just to make us dream" She grumbled.
“Darling calm down and listen to what he has to say us! We’ll see if it is possible.” He remarked to his wife.
"Dad could find a new job, because I know that his business will close." Children added with insured.
"It is true that times are hard right now in our country but this will messed our lives" She concerned with hesitation.
"Wneed to learn another language" the father says in his thoughts.
"This is not a problem, I learn this language at school" He added with pride.
"I do not think you can teach us many things because you do not have good grades" his dad replied with irony.
"I'll make sure to have better grades!" He whispered with hope.
"I think so.." blinking in the eye "On reflection, it is true could this possibly improve our lives, we will think about it" She said kindly.
“Whoua thank you very much!” He said cheerfully and he kissing his parents.