allow date in YYYY-MM-DD form in booking.rb
allow date in YYYY-MM-DD form in booking.rb

hauledev/bookyt,hauledev/bookyt,xuewenfei/bookyt,silvermind/bookyt,gaapt/bookyt,xuewenfei/bookyt,silvermind/bookyt,huerlisi/bookyt,gaapt/bookyt,gaapt/bookyt,wtag/bookyt,gaapt/bookyt,wtag/bookyt,xuewenfei/bookyt,hauledev/bookyt,huerlisi/bookyt,silvermind/bookyt,silvermind/bookyt,wtag/bookyt,huerlisi/bookyt,hauledev/bookyt