My problem in Mexico

Hi everybody:

 
Well, one year ago I traveled to Mexico City. It was fantastic!
My stay in Mexico was amazing, but on the last day I had an inconvenience at the airport.

The passengers and I were waiting in the departure lounge when suddenly a flight attendant came to us and said: "Good afternoon, there´s a computer problem in the control tower, so the flights have been delayed six hours".

We were very angry. Children were crying for hours. Finally, the plane took off at 2 P.M.
On the plane I spoke with two other passengers, Claudia and Mario. They were from Argentina, and I found them to be quite interesting. 

That´s all about my problem in Mexico. Thanks for reading!

My problem when I was in Mexico

Hi everybody
Well, one year ago I travelled to Mexico City, it was fantastic!
My stay in that country was amazing, but the last day I was inconvenienced at airport.

The passengers and I were waiting in the departure lounge, suddenly a flight attendant came to us and she said: Good afternoon, there´s a computer problem in the control tower, so the flights have been delayed six hours.

We were very angry, some children were crying for many hours. Finally, the plane took off at 2pm.
On the plane, I was talking with Claudia and Mario. They are from Argentina and they were very interesting.

That´s all about my problem, thanks a lot for reading it.

I wouldn't call this a "mistake", as that would imply that YOU have done something wrong, so a "problem" or "issue" would be a better word to use :)
Also to know when to say "someone and me.." or "someone and I.." think about if the sentance would make sense without the "someone and" part. ig;
"My friends and I ate chocolate for dessert." also makes sense as "I ate chocolate" but not "me ate chocolate"
and

"He gave my friends and me chocolate" also makes sense as "He gave me chocolate" but not "he gave I chocolate"