NASA released a request for information from American industry capable of providing safe, reliable, and cost-effective human space transportation services to and from the International Space Station to ensure a continuous human presence aboard the microgravity laboratory.
NASA is considering the acquisition of commercial crew space transportation services from one or more U.S. providers through commercial services contracts as the agency works to extend the life of the space station beyond 2024. This would allow for a seamless transition to commercially operated, low-Earth orbit destinations and allow NASA to continue its vital scientific research to prepare for human exploration beyond low-Earth orbit to benefit life on Earth.
Read more here: https://www.nasa.gov/feature/nasa-requests-information-for-american-crew-transportation-to-space-station