Been figuring on how to create dialogues

There's a several task I need to complete..
My head spinning around and my brain extremely exhausted..

Here's te situation where I need to produce or create the dialogues between my friend and I
1. Terrible food in restaurant





2. The school holidays, what should I do




3. The movies that I've watched





4. Your son/daughter to a friend-birthday celebration




5. Dislike grammar in English lesson









still don't have any idea.. But then, I've done the situation number 3, but still 4 situation more to go..
Where do I begin to create this dialogue, come out come out wherever you are oh inspiration..


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