I am unable to take your call at the moment, but your call is very important to me. Please leave a brief message and a number where I may reach you, and I will return your call as soon as possible. Thank you for calling. In-person communication skills go beyond verbal tone to include body language. Eyes are not looking at me, appears uncertain.
Eye contact is important in good communications.
Looking someone in the eyes while you listen or speak gives the other person a sense that you are attentive and that you believe your statements are truthful. Looking furtively to the corners of a room or down at your hands while speaking can indicate a lack of confidence in your responses. Not looking your interviewer in the eyes when they are speaking denotes a lack of interest in what they have to say or a lack of concentration. This means the obvious, no gum chewing, but also means that you need to take particular care of the appearance of your mouth and teeth. This may sound silly, but if you are currently employed and planning to hold an evening interview after work, you may want to consider taking a toothbrush and toothpaste to work with you.