The interviewer wants to gauge how flexible and experienced you are in this regard. How you answer this question, direct or evasive, will clue them into the truth behind your answer.

Be upfront about the schedule you're willing to work. As you know, you are interviewing them as much as they are interviewing you. This distinguishes you from the herd as a viable candidate simply because you're both after the same thing, a good fit. Interviews are an excellent time to uncover expectations. Take notes and follow up with questions. When possible, have a notebook or folder containing all of the resumes and cover letters you've sent to other employers, divided into sections, with notes from each interview in each separated tab. This will not only advertise you are playing the field but are approaching it with an organized systems approach, where you are scaling what each job has to offer, as well as respectfully exhibiting your interviewing skills.