Oliver stayed still as Sam got on the broom behind him. He didn't want to make the broom unsteady and he wasn't sure if it was possible or not. Since he'd never flown with someone, he wasn't sure how it worked very well. When he felt Sam hold onto him, he smiled. He liked the fact that Sam clearly trusted him despite all his misgivings on this.
"Alright," he replied, and slowly began to ascend in the air. Normally he'd just take off, but he went slowly so Sam could adjust or tell him when it was too high. Not that he was planning on going all that high. He wasn't going to risk Sam's safety just to show off.