Dear, sir.
Nice to meet you again.
I have just read your requirement carefully and had very interesting in your project.
I have a lot of experiences in development of mobile application for schedule app, chat App, messaging, social networking, restaurant reservations ,ADS, Push Notification, Google Map, and so on.
No problem.
I can complete your job perfectly.
Believe me.
I await you favorite reply with interesting.
Best regards.
Chai.