olive oil (little)

lemon juice or vinegar..

salt,pepper, sugar to taste

toasted sesame seeds

sprinkle garlic powder to taste or garlic salt

some yogurt if its very dry..

You can add cream cheese or cream to it but it gets fatty..

Coriander and chopped green chillies are good too..

You can experiment based on the vegetables or pasta you are using...

For eg.. if you are making a pasta based salad then you can add some pepper, oregano, basil etc.. Dill can also be used..

Cheers