The 10 most important words: "I apologize for our mistake. Let me make it right."
The 9 most important words: "Thank you for your business. Please come back again."
The 8 most important words: "I'm not sure, but I will find out."
The 7 most important words: "What else can I do for you?"
The 6 most important words: "What is most convenient for you?"
The 5 most important words: "How may I serve you?"
The 4 most important words:"How did we do?"
The 3 most important words: "Glad you're here!"
The 2 most important words: "Thank you."
The MOST important word: "Yes."