Can I help you , Madam ?   Yes , I'd like to exchange some US dollars into RIB .   How much would you like to exchange ?   What's the exchange rate for RIB ?   It's US 100 for RIB 802 today .   I'd like to exchange 3,000 .   Fill out this exchange memo , please .   Yes . Here you are .   Wait a second , please ... These are 24,060 RIB and the receipt , please check them .   All right , thank you so much , good-bye .   Good-bye . 