In a small mixing bowl, blend the softened cream cheese, mayonnaise, dill, chives, and lemon juice until the mixture is uniform.

Taste and season the herbed cream cheese with salt and pepper.

Spread approximately one tablespoon of the mixture onto one side of each slice of bread, ensuring coverage to the edges.

Arrange cucumber slices in a single, slightly overlapping layer on four of the bread slices.

Place the remaining bread slices on top, spread-side down, to close the sandwiches.

Using a serrated knife, trim the crusts from the sandwiches.

Cut each sandwich into four triangles or three rectangles and serve immediately.