歡迎以後多來北京！
Hope you'll visit Beijing more often.
請留步，不用送了！
I will see myself out, please.
多保重！
Take care!
祝您一路平安！
Have a nice trip!
願為您效勞！
At your service!
為…舉行宴會/宴請
Host a dinner/banquet/luncheon in honor of …
歡迎宴會
Welcome dinner
便宴
Informal dinner
午宴（附有情況介紹或專題演講等內容）