What is the highest profit order in the East superstore of customers from Houston, Texas?
highest profit refers to max(Profit); Houston, Texas refers to City = 'Houston' and State = 'Texas'
SELECT T1.`Order ID` FROM east_superstore AS T1 INNER JOIN people AS T2 ON T1.`Customer ID` = T2.`Customer ID` WHERE T2.City = 'Houston' AND T2.State = 'Texas' ORDER BY T1.Profit DESC LIMIT 1