Asking and giving opinion

asking: what do you thing if we will going to bali next week?
answer: Great idea! I think the beach will has a good wave for surfing!

Asking opinion : an expression to show your curious about your friend opinion
Giving opinion : an expression to give/ show your opinion about something

Example :
Asking opinion : what do you think about my dress
Giving opinion : i think it's nice

Asking opinion : give your opinion about my dress
Giving opinion : i think it's nice

Asking opinion : what is the taste in your opinion ?
Giving opinion : i think it's great