Develop a script. You're going to asked a lot of the same questions and if you can work on pre-planned phrases to answer that, you may find that easier. Of course, you will have the occasional surprise question as I did when I ran the service desk at a store. Overall, don't be embarrassed. You have a stutter. You didn't ask for it, you didn't choose it, you didn't cultivate it. The vast majority of people are very understanding and will claim to never notice a stutter. We all have speech fluency issues, some just more than others. you're okay.