Question: What was the two-person Omnimover dark ride in Tomorrowland replaced by Delta Dreamflight?

Context paragraphs:
If You Had Wings: If You Had Wings (June 5, 1972 – June 1, 1987) was an attraction at Walt Disney World.  It was a two-person Omnimover dark ride in Tomorrowland in the Magic Kingdom, sponsored by Eastern Air Lines.  The ride featured travel destinations throughout the Caribbean and elsewhere, all of which were, in keeping with the ride's sponsorship, serviced by Eastern.  The ride had an eponymous theme song by Buddy Baker.

Valhalla (Pleasure Beach Blackpool): Valhalla is a large indoor dark ride at Pleasure Beach Blackpool in Lancashire, England.  It was opened on 14 June 2000 at a cost of £15 million (equivalent to more than £23 million in 2015) - one of the most expensive water rides ever to be built - and is the longest indoor dark ride in the world.  Both a dark ride and a water ride, Valhalla uses special effects which incorporate fire, water and snow.

Wonder Mountain's Guardian: Wonder Mountain's Guardian (also known as "Guardian" or "WMG"; during Halloween Haunt known as "Zombies 4D") is a 4D, interactive dark ride roller coaster at the Canada's Wonderland amusement park located in Vaughan, Ontario, Canada.  It is also the first ride part of Cedar Fair's Amusement Dark collection.  Park management first proposed a dark ride located inside Wonder Mountain around 2004.  Technology and budget limitations at the time delayed the project's planning and design stages until 2011.  The steel track was manufactured by Art Engineering; it is approximately 1000 ft long and has a maximum height of about 60 ft .  The ride also has one of the largest drop tracks in the world.

Horizons (Epcot): Horizons was the name of a dark ride attraction at Epcot (then known as EPCOT Center), a theme park at Walt Disney World in Bay Lake, Florida.  Located on the eastern side of the "Future World" section of Epcot, the attraction used Disney's Omnimover conveyance system, which took guests past show scenes depicting visions of the future.  It is believed to be the sequel to Walt Disney's Carousel of Progress, an attraction in Tomorrowland at Walt Disney World's Magic Kingdom.  Horizons was the only attraction in "Future World" to showcase all of Epcot's "Future World" elements: communication, community interaction, energy, transportation, anatomy, physiology, along with man's relationship to the sea, land, air, and space.  The attraction officially opened on October 1, 1983, as part of Phase II of Epcot.  Horizons originally closed in December 1994, a little more than a year after General Electric had ended its sponsorship of the attraction.  Horizons re-opened in December 1995 due to the closure of two other attractions that were down for refurbishment in "Future World", Universe of Energy and World of Motion.  The attraction permanently closed on January 9, 1999, after which the attraction was dismantled and its structure demolished to make room for , a motion simulator thrill ride that opened on October 9, 2003.

Lost Coaster of Superstition Mountain: The ride enters an enclosed 'mountain' area several times throughout the ride.  The imitation mountain was originally used for a previous dark ride.  This dark ride went through the mountain and lights would illuminate scenes of various animals in the mountain.

Mr. Toad's Wild Ride: Mr. Toad's Wild Ride is a dark ride at Disneyland Park, also formerly located at the Magic Kingdom.  Originally planned to be a roller coaster, it became a dark ride attraction because Walt Disney only wanted attractions that were appropriate for all ages.  It is one of the few remaining attractions that was operational on the park's opening day in 1955 (although the current version of the ride opened in 1983).  The ride's story is based on Disney's adaptation of "The Wind in the Willows" (1908), one of the two segments of the film "The Adventures of Ichabod and Mr. Toad" (1949).  It is currently operating in Fantasyland.

Phantom Theater: Phantom Theater was an Omnimover dark ride located at Kings Island in Mason, Ohio.  Originally opened in 1972 as a dark boat ride called "Enchanted Voyage", the ride was later converted to an Omnimover system in 1992 by D. H. Morgan Manufacturing and renamed Phantom Theater.

Reese's Xtreme Cup Challenge: Reese's Xtreme Cup Challenge (RXCC) is a current attraction which was installed in 2006 at Hersheypark, where it became the first competitive, interactive dark ride.  It was built by Sally Corporation, a popular dark ride manufacturer.  The ride experience theme is sports, and the building exterior is themed on the Hersheypark Arena which is directly behind, outside Hersheypark.  This ride is not to be confused with the free Hershey's Chocolate World tour ride.  The ride replaced a building which housed the park's first aid and ride department offices, as well as a practice skating rink.

Dreamflight: Droomvlucht ("Dreamflight" in English) is a dark ride in Efteling amusement park in the Netherlands.  It was designed by Ton van de Ven, built by Translift and opened in 1993.

Delta Dreamflight: Delta Dreamflight was an attraction located in Tomorrowland at the Magic Kingdom inside the Walt Disney World Resort, and was sponsored by Delta Air Lines.  Dreamflight replaced an attraction called If You Could Fly, which was originally the attraction, If You Had Wings, sponsored by Eastern Air Lines.

Supporting paragraphs: Delta Dreamflight If You Had Wings
Answer: If You Had Wings