Hum not really Abbas is a men's name and here it says "Abbas is a passenger". ( So it's a real journey) This is actually used mostly in colloquial language and I think it can be translated like that. And the translator might indicate the speciality of the idiom if the s/he wishes.
As Abbas is a name, maybe you can abbreviate it but because it is a special word combination, I'm not sure if you should
Yes, 'Abbas' is a name and 'yolcu' is 'passenger' but it's an idiom in Turkish. For example, when someone is leaving he could say 'abbas yolcu' to mean ''I'm leaving''.