Hi Anamika,
Welcome to the Support Communities!
The article below may be able to help you.
Click on the link to see more details and screenshots.
Currently, you can add additional location reminders by entering a specific street address.
iOS 6: About Reminders
http://support.apple.com/kb/HT4970
The iPhone User Guide below explains how to use Reminders on page 156:
manuals.info.apple.com/en_US/iphone_user_guide.pdf
Reminders can alert you when you arrive at or leave a location.
Add a location alert: While entering a reminder, tap , then turn on “Remind Me At a Location.”
To use a different location, tap your current location. Locations in the list include addresses from your personal info card in Contacts, such as the home and work addresses you’ve added.
To use a different address, tap Enter an Address
Cheers,
Judy