Sometimes we have out-of-town projects and travel is required. If hired, would you be available to travel when needed?

When responding, you want to avoid saying you are unavailable to travel without explaining why. The interviewer is more likely to hire someone who is available to travel, but if you have something that keeps you from traveling and you explain why, the interviewer may give you a chance and offer you the job. For example, suppose you have your child every other week, and you could not travel when you have them. If you explain your situation, the interviewer may try to accommodate your schedule.

"Yes, I would be available to travel when needed. I do not have anything that would keep me from traveling out-of-town until the project is completed."