Verb conjugation of "relate" in English

The connecting flight to Phuket was fully booked, and the connection to Krabi had five empty seats. The problem was that the boarding began in ten minutes and I did not even have a ticket.
Could you please read the following offers in a critical manner and confirm it before I will send it? I have also mentioned the warranty and the software in the offer, because it was requested by the customer.
Last week I was at the birthday celebration of my grandma. She is 95 years old and very healthy. I'm 33 years old. I work as an electrician, and I had my own company until last year.