answer: #Person1# and #Person2# are recalling their first date. It's been 20 years since they got married.
documents: #Person1#: How time flies! 
  #Person2#: May and Danny have already grown up. 
  #Person1#: I can still remember our first date. 
  #Person2#: Look at that big tree over there. 
  #Person1#: Yeah, oh my god! It's still there. We have our first date right on there. 
  #Person2#: Do you know that I fell in love with you at the first sight. 
  #Person1#: You were dull at that time. 
  #Person2#: But you agreed to go out with me at last. 
  #Person1#: I can't believe this for it's been 20 years since we got married.