Here are the sentences with the verbs in brackets correctly transformed into the infinitive or -ing form:
A: I enjoy watching films. It's my hobby.
B: Me too! What's your favourite genre?A: I imagine traveling the world someday.
B: That sounds like a fantastic adventure!A: Let's meet for lunch tomorrow.
B: I'd love to! What time works for you?A: Nick tends to overthink things too much.
B: Yeah, he should try to relax more.A: I'm busy studying for my exams.
B: I see. Good luck then!A: They plan to visit their grandparents next weekend.
B: Family time is always nice.A: Does Mary look forward to going abroad?
B: Yes, she's so excited!