nytimes.com: Doug Iannelli, left, who runs a company in Atlanta called Flying Companions, helps Bill Penn, a client for seven years, at the grocery store. Credit: Dustin Chambers for The New York Times

nytimes.com: Doug Iannelli, left, who runs a company in Atlanta called Flying Companions, helps Bill Penn, a client for seven years, at the grocery store. Credit: Dustin Chambers for The New York Times

Janet Robertson, a documentary filmmaker in New York, helps look after her uncle, Vincent Fahey. Ms. Robertson hired a skilled traveling companion for Mr. Fahey on a London trip.

Doug Iannelli, owner of Flying Companions in Atlanta, managed the travel reservations and logistics, slept in an adjoining hotel room and otherwise accompanied Mr. Fahey full time as they took in the museums, restaurants and tourist sites. When needed, Mr. Iannelli provided a wheelchair and made sure they took frequent rest breaks.