What century are you in, Jivko? People don't make calls anymore.
Websites are out of date too.
over 50% of web searches on Google, for example, are now from mobile.
This changes the method - people expect the system to take account of their location, their preferences and their friends' suggestions, not just push notifications from vendors eager for business. They expect the app or mobile website to not only show them the options but book them and even take payment, without resorting to phone calls.
Don't do this. It will take a lot of effort and won't get the traction you need to make it work.