Last week I travelled to the city of Riyadh to attend a meeting related to my job. The meeting was scheduled to start at 9:00 AM, and to run until 11:00 AM. I planned to take my lunch around noon. In the evening, I met my friend and spent a very pleasant time with him.
OR, the first sentence can be:
Last week I travelled to Riyadh to attend a business meeting.
The last sentence can also be:
In the evening I met my friend, and we had a very pleasant time together.
The rest remains the same.
Hope this helps.