Constant communication with clients, a good grasp of the sales process and passion for the job are crucial for travel agents looking to grow their cruise business, says Bob Becker, senior vice president of consumer research for Norwegian Cruise Line. Agents should also regularly review their operations to find areas that need improvement, Becker says. "When you have a bad month, look back and look for what you've been missing. If you are an 8-hour-a-day employee, you need to make 100 calls a day. You will get 60 no responses and 40 opportunities," Becker said.