Answer:
1. Could you tell me where the post office is?
2. I was wondering if you have any mayonnaise?
3. I'd like to know what time the film finishes.
4. May I ask what your name is?
5. I'd be interested to know what the salary is for this job.
6. I'd like to know if I should apply for the job online.
7. I'd be interested to know if you received my application.
8. Could you tell me when the train leaves?
9. I was wondering if you have a table for four?
10. May I ask when the interviews will take place?