help me unity 2d

can anyone help me with this example, I speak English very poorly
requirements :
generate screen program includes 2 scene a and b
scene A:
+ wallpaper
+ 1 line text display input name
+ Exit button
+ Click the play button will switch to scene b and window c
scene B:
+ Wallpaper
+ button Hello,click button will switch to the window c
buttons have 2 states, normal and state when clicked
screen transition effect between a and b
window c:
+ wallpaper
+Hello + username
+ Click ok button return to scene b
thanksyou very much

 

You may want to remove the white background on those buttons.

 

ok ^^!