Data validation (LIST) : Auto-Route when enter Alphabet

I have a Data Validation LIST of 150+ data.
My users find it difficult to scroll up & down to select the data.
Explore ComboBox but abit difficult to apply.
Similar to Airline website, when there's a long list of data (Citizen), we can actually use keyboard to type M and will auto go to 1st data that start with M.
By this way, at least it's easier to do selection.

Need help pls...