Would please check if these expressions at airport would work at an airport?

4.짐 How many bags do you have for check-in?
Are there any fragile items in your bag? Did you pack them well?
Are there any dangerous items such as explosives, weapons or anything flammable gas or spray?
Do you have any aeresol spray containers?

Please put your bags up on the scale individually and tell me who owns each bag.
Turn them wheel side up, please.
5.안내 Thanks for waiting, sir.
Here is your passport and boarding pass.
The gate number is 00 and boarding time is at 0;00 00:00
I just added you up the mileage for you; I have just credited you the mileage.
Do you know where is the lounge is?
The lounge is located in on the 3rd floor before the Immigration Office.
Please use the Asiana lounge
Thank you.

**Note:  I'm using American English here.  So, the articles may not be necessary when dealing with people who speak British English.  Good job, overall, JGW.