Good morning . May I speak to Mr . Black , please ?   Speaking .   This is the Front Desk . I'm afraid that the air conditioning in your room needs repair . We would like to request you to change your room . We are very sorry for the inconvenience .   0K . Well , I suppose I have no choice . What do you want me to do ?   What time is the most convenient for you to change rooms , sir ?   I'm going out in about half an hour .   What time will you be back ?   Oh , around seven o'clock , I suppose .   We could move your luggage while you are out , but could you take any valuables with you ? You may pick up your new room key No . 216 from the Front Desk when you return . 