Example:
A: Hi, B. What are you reading?
B: I'm reading about an eclipse, Have you ever een one?
A: Yes, I have. saw a solar eclipse once.
B: No kidding! When did you t?
A. I saw it five years ago
B: wow! what were do that time?
A: was jogging in a park with my sister, then everything went dark It was amazingl What about you? Have you seen one?
B: No, haven't Butl have always wanted to.
A: So do i I want to see it again. Anyway, I have to go now. See you
B: OK. Have a nice day Bye