Sequence diagram

DiagramSource

sequenceDiagram
    Alice ->> Bob: Hello Bob, how are you?
    activate Bob
    Bob-->Alice: Checking with John...
    activate Bob
    Note right of Bob: Bob thinks a long long time.
    Bob-->>John: How about you John?
    activate John
    John ->> John: Reflection
    John -x Bob: I am good thanks!
    deactivate John
    Bob--x Alice: I am good thanks!
    deactivate Bob
    Note right of John: John thinks a long<br/>long time, so long<br/>that he addes his own<br/>line breaks.

    Alice->John: Yes... John, how are you?

    loop Daily query
        Alice->>Bob: Hello Bob, how are you?
        alt is sick
            Bob->>Alice: Not so good :(
        else is well
            Bob->>Alice: Feeling fresh like a daisy
        end

        opt Extra response
            Bob->>Alice: Thanks for asking
        end
    end

sequenceDiagram
    Alice ->> Bob: Hello Bob, how are you?
    activate Bob
    Bob-->Alice: Checking with John...
    activate Bob
    Note right of Bob: Bob thinks a long long time.
    Bob-->>John: How about you John?
    activate John
    John ->> John: Reflection
    John -x Bob: I am good thanks!
    deactivate John
    Bob--x Alice: I am good thanks!
    deactivate Bob
    Note right of John: John thinks a long<br/>long time, so long<br/>that he addes his own<br/>line breaks.

    Alice->John: Yes... John, how are you?

    loop Daily query
        Alice->>Bob: Hello Bob, how are you?
        alt is sick
            Bob->>Alice: Not so good :(
        else is well
            Bob->>Alice: Feeling fresh like a daisy
        end

        opt Extra response
            Bob->>Alice: Thanks for asking
        end
    end