Dear Sirs/Madam,
 
I would like to enquire if you could arrange porter service for my manager who will arrive at JFK International Airport in New York on June 29th, Sunday, on CX 830 from Hong Kong, ETA 13:10.  They are a family of four people, a couple and their two teenaged daughters.  They will have about 20 bags with 10 large ones and the rest are smaller ones.  They will meet the porter(s) at the luggage carousel, help them take the luggage to meet the driver, and load all the luggage into the van.
 
I look forward to hearing from you on details of the arrangements and the fees.
 
Kind regards,