Minimalist Echo Line Logo Design

I'm seeking a modern and minimalist logo for "Echo Line." The logo should symbolize two-way communication and the reflection of ideas, using the concept of an "echo" to represent the flow of energy, messages, or thoughts in both directions.

Key Elements:
- Sound waves
- Arrows or lines indicating movement
- Speech or thought bubbles

Color Palette: Cool tones (blues, greens)

Ideal Skills and Experience:
- Strong portfolio in modern and minimalist logo design
- Ability to creatively incorporate multiple elements (sound waves, arrows, bubbles)
- Proficiency in using cool color palettes

Please share relevant work experience and a few initial concepts.