I'm currently writing a journey-focused plot arc, and I'm struggling a bit with the character interactions. To give you some background, the protagonist is a lone wolf of sorts whose job is akin to a nomadic exorcist. He gets wounded at the start of the series, and a bar maiden nurses him back to health. She insists on joining him in his journey to the capital. He begrudgingly allows her to tag along, since he knows that in his weakened state, it isn't safe to venture in the woods alone.
However, the protagonist doesn't particularly like that the bar maiden has joined him, and he's a rather stoic figure so he doesn't say much in general. The problem is, since this is at the beginning of the story I have to allow the reader to get to know these characters... I find this harder to do when one of the characters doesn't really want to talk to the other one. I was hoping maybe someone can give good examples of featuring a duo who doesn't get along and yet, their dialogue still makes the journey interesting?
These characters are mostly traveling in seclusion, so there aren't many other characters who can prompt more conversation. I could make them enjoy each other's company in time, but I struggle with that buildup as well.