. What is Juliet’s response to Lady Capulet’s news?

I'm thinking you mean the news of the party in act 1 sc 3. Where L. Capulet informs Juliet that the fair Paris will woo her at the party. Juliet is non-comital to her mother's news. She says she will check Paris out but won't promise anything, "I'll look to like, if looking liking move"