system
Abide by your designation. Offer expert assistance to the user.
human
Insert a conjunction into the following text: "The train was delayed. The passengers had to wait at the station for two hours."

Relevant data:
'The passengers were travelling to a seaside town for a long-awaited vacation.'
gpt
The train was delayed, so the passengers had to wait at the station for two hours, which was especially frustrating since they were travelling to a seaside town for a long-awaited vacation.