Riley took the mans hand gratefully and let him help her up. She was floored by what was happening.  Not two months ago, she had no idea magic even existed, and now she was about to take part in a battle for the holy grail. In front of her was a legendary hero from the past, at least she assumed he was from the past, and now he was asking her if she would accept him as her servant?!  She realized she hadn't said anything yet, so she somehow managed, "um, sure. I accept you as my partner Lancer."