Sql-server – Get Data for user excluding another user blocked with its time interval

Two tables

Message



  ID | Message | FromUserId | ToUserId  | DateCreated
    1  | M1      |     A      |   B       | 2017-10-05 12:00:00
    2  | M2      |     A      |   B       | 2017-10-05 12:05:00
    3  | M3      |     B      |   A       | 2017-10-06 12:05:00
    4  | M4      |     B      |   A       | 2017-10-06 12:05:00
    5  | M5      |     A      |   B       | 2017-10-07 12:05:00
    6  | M6      |     A      |   B       | 2017-10-07 12:05:00
    7  | M7      |     B      |   A       | 2017-10-08 12:05:00
    8  | M8      |     B      |   A       | 2017-10-08 12:15:00
    9  | M9      |     B      |   A       | 2017-10-08 12:18:00
   10  | M9      |     B      |   A       | 2017-10-09 12:05:00

BlockedUsers

ID | FromUserId | BlockUserId | StartBlockDate       | EndBlockDate
1  |    A       |   B         | 2017-10-06 11:55:00  | 2017-10-07 11:55:00 
2  |    A       |   B         | 2017-10-08 10:05:00  | 2017-10-08 12:07:00 
3  |    A       |   B         | 2017-10-09 11:55:00  | NULL 

Now when B tries to retrieve messages it gets whole messages of Message table

but when A retrieves messages, its result should be

Message

ID | Message | FromUserId | ToUserId  | DateCreated
1  | M1      |     A      |   B       | 2017-10-05 12:00:00
2  | M2      |     A      |   B       | 2017-10-05 12:05:00
5  | M5      |     A      |   B       | 2017-10-07 12:05:00
6  | M6      |     A      |   B       | 2017-10-07 12:05:00
8  | M8      |     B      |   A       | 2017-10-08 12:15:00
9  | M9      |     B      |   A       | 2017-10-08 12:18:00

I tried with below query

Declare @UserId int = A 
SELECT
  *
FROM
  dbo.Message AS m
WHERE
  NOT EXISTS
  (
    SELECT
      *
    FROM
      dbo.BlockUser AS bu
    WHERE
      m.DateCreated >= bu.BlockStartDate
      AND m.DateCreated < bu.BlockEndDate
    and bu.FromUserId = @UserId
  )
;

I am stuck with the condition for user being blocked and another user.

I took reference of question:get data excluding time intervals

but could not figure