How to display date for selected dated on my entry screen?

Question

Hi Friends,

these is my entry level screeen

======= travel plan.aspx======

from date: jquery date picker

to date: jquery date picker

Visited places : textbox


ADD(after press these button entire details ll display on gridview)

submit(after press these button ll go to reporting person for getting approval)

after given the approval travel plan


the user enter bill claims in these screen

======== travel claim.aspx=========

depaturedate: jquery datepicker
lodge: text
food bill:text
dail allowance:text


now my requirement is departuredate only show the dates of what i entered dates travel plan


for ex:


the user entered travel plan date

from:1-jun-2013
to:20-jun-2013
visted places: chennai,banglore,delhi,mumbai


travel claim.apsx page

departuredate : (here show the date from 01-jun-2013 to 20-jun-2013)
if choose the date 21-jun-2013 means ll show " that date cannot be available on travel plan"


how to do that?