What is “call dialog” , “call end dialog” and "SMS dialog"?

Whoscall offers three kinds of dialogs:

1. call dialog: When there is an incoming call, Whoscall automatically provides instant caller information in this dialog.
2. call end dialog: When a call is over, Whoscall provides an “after call dialog”, which offers options such as block, call back, etc. If you could not answer the call, a missed call notification will appear in the dialog.
3. SMS dialog: When there is a message, Whoscall automatically provides instant caller information and the text in this dialog.