What to reply to a welcome message?

Could you elaborate on how one might appropriately respond to a welcome message in the context of cryptocurrency and finance? I'm particularly interested in hearing about any professional etiquette or conventions that are unique to this field. What elements should be included in such a response, and how can it reflect a positive and knowledgeable first impression? Furthermore, is there any advice you would give to ensure the reply not only acknowledges the greeting but also potentially sparks a productive conversation?