Yup, this is appropriate to say in that situation. It would sound weird to say it if they haven't been gone too long though.
Usually, you only use this phrase if the person has been gone for a long time.
2 มิถุนายน 2010
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MEANS GOOD TO SEE YOU BACK
2 มิถุนายน 2010
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Hi... yes it is perfectly correct and appropriate.