Помогите ,составьте диалог на английском .Покупатель и продавец цветов .

-Hello!
-Hello,can i help you
-yes i should a buy flower for my girlfriend
-Ok. buy this beautiful rose
-Nice,she like rose but is very expansive...
-Good,buy this nice violet
-How much is cost
-3$
-yes,thats what i need
-good keep
-thanks,goodbye
-goodbye,come again