If hired, there may be times you have to travel out of town for a job. Would you be available to travel when needed?

Typically, when a company requires travel as part of the job, they will put that in the job description, and you will be aware that is a requirement when you submit your application. The interviewer wants to ensure that if they hire you, travel will not be an issue. Describe how traveling when needed will not be a concern and how you enjoy traveling for projects. They want to see that you are a team player and have flexibility with your schedule.