This is Manager Liang's office , what can I do for you ?   This is Wang Miao from AB company speaking . Our CEO Mr . Green has an appointment with Mr . Liang tomorrow morning . But there is a minor change in tomorrow's schedule . Mr . Green has an abrupt urgent case tomorrow and he has to go abroad today . He wanted me to convey his apology to Mr . Wang .   OK ! I'll tell him .   And Mr . Green will make another appointment when Mr . Wang comes back .   Ok ! Thanks for calling .   Bye ! 