如果顾客刚走进来,就是Welcome Sir/Madam.如果已光顾, 就是 Thanks for coming,(Thank you for coming 比较正式写) 别忘了加一句 do come again 或 please come again. 谢谢光临,请再光顾。
Thank you for coming,Please walk slowly.
Thank you for your presence . Please take care .