My first job in Highschool was working at a fast food restaurant (White Castle) in Chicago. Oh they loved to put me on Drive Thru. I hated them for it, but i did the job and mostly well. It was rough in the beginning, i remember the other workers laughed at me when i was having blocks and repetitions, but i survived the experience. Use every experience as an opportunity to talk and practice your speech. Anyhow, hope it goes well for you, try it for awhile and see if your fluency goes up as your anxiety for talking goes down... you might be suprised. Good Luck!