Starting New Gym

Okay, I'm just being honest here... I'm about to start a gym membership at Anytime Fitness. They have a fitness consultation and a 30 day program for you to follow. Now... Will it be weird or awkward for me to tell them my fitness goal is to build a booty???😬 I don't know how that will sound. I'm just tired of my pancakes lol. Should I just keep it simple and say I'm gaining weight and then do my own routine on my own time? Idk what do you think...