Regardless of the mood you're in, always answer the phone with a cheerful tone. Next, smile! Believe it or not, the tone of your voice changes when you smile. So even if you don't feel like smiling, fake it: it makes you sound friendly.

Hire a professional receptionist who displays professionalism and courteous behavior towards every client. Greet your clients with a warm smile. Keep the client informed about the next step or if there is any delay beforehand. Be hospitable by offering your customers drinks or magazines to make them feel relaxed.