Нужны идеи для диалога по английскому, ну или сам диалог,только с глаголами can could и may

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Hi there! What are you up to today?Hi! I'm thinking of going for a walk in the park later. Would you like to join me?I'm not sure if I can, I have some work to do.Oh, that's too bad. Maybe you could come with me another time?I might be able to do that. Let me check my schedule and get back to you.Sounds good! Just let me know.Will do!