如果有具体的时间,Good morning/afternoon/evening 要比hello小小更礼貌.
可以说,Good afternoon, Sir/Madam. I'm xxx from xxx. I hope you had a nice trip here. Please let me help you with your luggage. This way please~
大意上和楼主的差不多,只是稍微口语化一点~要采纳哦^^