OK, when would you like to visit? We'll do our best to accommodate your schedule.
[VISITOR GIVES DATES/TIMES]
Great! I will tentatively schedule an appointment with our team. You will receive a follow-up note confirming the time. If there's any issue as the time gets closer, just let us know and we'll be happy to accommodate or reschedule. If I could take your name, email address and telephone number, someone from the team will be in touch asap.