No one is sure when things will get back to normal, but one casino operator in planning for August to see the Las Vegas strip reopen. “The question is going to be airlift into Las Vegas,” Robert Goldstein, president and chief operating officer of the $34.9 billion Las Vegas Sands, said on the company’s first-quarter earnings call on Wednesday evening. “I don’t know how airlift would look in the next 90 days” or how the economic downturn will affect Americans’ travel plans, he added. “But group business appears to be out there for August and into the fall.” Earlier on…