Hello , I've got to get up early tomorrow , so please give me a wake-up call .   Of course . We can give you a call anytime you like .   Actually , I need two calls , one at 7 and the other at 7 fifteen .   Your wish is our command . Expect a call at 7 , and another one at 7 fifteen .   Wait a minute ! I don't like 7 fifteen , now that I think about it . Change it to 7 thirty . 