I would like to link two date fields. One for when guests arrive, and one for when guests depart. I am wondering if there was a way to link the two in such a way that i can create a third field that shows the dates they will be attending. 

It need to include the date they arrive, and the date they depart.

Example:

They arrive on November 1st.

They depart on November 6th

They are attending the 1st - the 6th.

The Question.

Is there any way i can create a relationship between the arriving and departing date entry fields, to automatically create an answer in the attending field or do i have to enter that by hand for all forms?

Thank you in advance. :)