Talk about events in the past

Cris - Did I ever tell you about my trip to Canada?

Ivet -   No, then was that?

Cris - Oh, it was when I was twelve, three years ago now. I've got some photos.

Ivet - Oh, can I see? Were there many people with you in the trip?

Cris - Oh yes, I did a tour so we were around 30 of us.

Ivet - Did you have a good time?

Cris - Yes, we visited a lot of cites. We all had a great time. The best bit was when we ride a helicopter in the Niagara Falls. 

Ivet - What happened then?

Cris - We could see all the waterfalls on the air, it was awesome one of the best moments of my life.

Ivet - That sounds great.