Baker is a dog and therefore likes mostly anyone who lets him sniff their hand (Strange being the only exception, the poor bastard). As such, Childermass very much doubts his judgment, but that's yet to actually convince him to stop wasting time with Lambert.

"The cookhouse and then my trailer," he already has the most boring answer in the universe. It's right after a show, what else is he going to do besides grab some dinner and then pass out? Though the mockery with his accent does earn a roll of his eyes. "Now if you'll excuse us..."

He's going to try and shift the Growlithe over into his own arms.