[He sighs and works on putting his laptop back in his briefcase.]

I am not used to taking trains very often. [He bites on his lower lip as he thinks back before reaching in his back pocket for his wallet, looking for his ticket. Just as a reminder...he gives the already punched ticket a once over and furrows his brows.]

...I didn't board the wrong train at the beginning. [It's a ticket for Osaka.] Strange. [Though he doesn't sound too beat up about it.]