Crystal Reports Dates Range

Question

If a guest1 is staying in hotel between 11'jan--19'jan..i want the guest1 for all days so that we should know guest1 is in "Inhouse"(staying in hotel )..i am taking two parameters... if am searching for 1jan ---30 jan i want to show guest1 details...and if i am searching for 18jan---18jan then also i want to display the guest1 details....please help me with query