By Abhirup Roy and Victoria Waldersee LAS VEGAS (Reuters) – Mercedes-Benz launched a new virtual assistant at the CES electronics trade fair on Monday capable of providing context-based suggestions and engaging in dialogue with users, signalling another step forward in the use of artificial intelligence in cars. The assistant can speak in different tones of various emotions and ask intelligent questions to clarify what exactly is being asked, the company said. “The car is your dialogue partner. You can ask questions, have a conversation, be productive,” Mercedes’ chief technology officer, Mark…