It's common that many people go for a decent restaurant and have their meal alone which turns out that it's expensive and boring. Idea is why don't we have an mobile/web application which will list out nearby restaurants and users who posted that they want a company to share their lunch bill. With this advantage is that they can try out different dishes and still with lesser expense as you would share with your stranger partner.
To be more specific about the application: 1)Any one wants to share their lunch bill, they open the application and check the near by hotels. 2)If anyone has posted already that they need a partner to share lunch, you could join them (probably their taste also mentioned in the app) 3)If you don't find any one who's open for sharing, you can post one.
This will work out for people those who travel, single, students,group of strangers.,