Optional String Match in Python Regex -

i have code in python 2.7 used in finding information flight in given piece of text. come grouped (operators have standard format , fill in blanks , send message)

import re  line = "jetmobile:your flight 9w448 on 14jan2015 expected leave blr @ 19:00 hrs, reach bom @ 20:42 hrs. download our mobile app http://m.jetairways.com/mobileapps booking(s), flight status, check-in , more."  matchobj = re.match( r'jetmobile\:your flight (.*?) on (.*?) expected leave (.*?) @ (.*?) hrs, reach (.*?) @ (.*?) hrs\. download our mobile app (.*?) booking\(s\), flight status, check-in , more\.', line, re.m|re.i)  if matchobj:    print "matchobj.group() : ", matchobj.group()    print "matchobj.group(1) : ", matchobj.group(1)    print "matchobj.group(2) : ", matchobj.group(2)    print "matchobj.group(3) : ", matchobj.group(3) else:    print "no match!!" 

however want match

"jetmobile:your flight 9w448 on 14jan2015 expected leave blr @ 19:00 hrs, reach bom @ 20:42 hrs. download our mobile app http://m.jetairways.com/mobileapps booking(s), flight status, check-in , more." 

and

"jetmobile:your flight 9w448 on 14jan2015 expected leave blr @ 19:00 hrs, reach bom @ 20:42 hrs. download our new mobile app http://m.jetairways.com/mobileapps booking(s), flight status, check-in , more." 

how do it?

make all new optional ?. use following::

matchobj = re.match( r'jetmobile\:your flight (.*?) on (.*?) expected leave (.*?) @ (.*?) hrs, reach (.*?) @ (.*?) hrs\. download our (?:all new )?mobile app (.*?) booking\(s\), flight status, check-in , more\.', line, re.m|re.i)