Translation of hormigón

When I saw the small plane I did not feel all to good about flying back to Cancun. It had only twenty four seats and was driven by propeller, which made a lot of noise. Fortunately the weather was good.
I told her that when you meet a person and you like that person you start dating him/her. After a while, if the couple stays together they go to the next step and move together or get married.
I went to the desk of Aerolineas Mexicanas and postponed my flight by two days. I did not have to get prepared as I had done some homework before coming here. The backup plan was Isla Mujeres.