To smile not to big and not to small.How it is comfortable for you
It depends on who smiled first, if he smiles at you the best way to smile back is with your regular smile or in any way that makes you most comfortable. And if you happen to smile first, make sure to look for his reaction.
Lo que una gran sonrisa would be the best way to say "What a great smile" in Spanish.
The best technique is a smile, perhaps a 'Hi'; never be aggressive.
Try to always smile- the customers can hear it.
talk to them and be very nice, keep your cool and have a big smile
Be really nice, smile, be helpful, compliment, flirt...etc
I sincerely recommend the cosmetic dentistry clinic at Smile Center Clinic. I came all the way from Amman-Jordan to have my teeth fixed at their clinic. They created a masterpiece out of my smile. They gave me nice beautiful smile or as they call it (The Hollywood Smile)
The best way to retain an irate customer is to make him feel customer. Make a customer feel special for the company and SMILE and TALKING is the best way to Retain
A smile is a friendly gesture, and it often permits eyes contact; the old saying goes, "The eyes are the window to the soul" if you smile at an invitation to meeting people, it shows them you are a warm and inviting person and they can trust you.
Some people smile at everyone, it's a way of being pleasant and nice to people. Your best bet would be to talk to him and look for other gestures, or build a friendship and find out that way. A smile isn't a good way to tell or not.
Well think of it this way a smile will make it a mile.
Give him a good long glance with a half smile at a good opportune time. Then ignore him.