// Consider using constants for URLs
const string StreamEndpoint = "/stream";
const string InboundEndpoint = "/inbound";

public async Task<bool> ExecuteRoleDialog(RoleDialogModel message)
{
    // Check and set appropriate end-point based on the profile
    if (agent.Profiles.Contains("realtime"))
    {
        processUrl += StreamEndpoint;
    }
    else
    {
        processUrl += InboundEndpoint;
    }

    // Further process execution logic
    try
    {
        // Your process execution logic
    }
    catch (Exception ex)
    {
        // Handle different kind of exceptions
        throw new CustomException("Error while executing role dialog", ex);
    }
}