Fix a taxi reservation system

I need someone to fix the way my taxi reservation system works. I own a taxi website [login to view URL] The reservation system has some defects i want fixed. For example if someone does not enter a time or date it still accepts the reservation. Also i want when people select to be picked up at the airport that it should give them lines to enter flight info in. There should also be an extras section for people to add car seats or meet and greet services. People should be able to select the type of vehicle needed. Car/ van/ suv In the backend, the website has a place for dispatchers to log in where the reservations can be seen. I want the freelancer to add a sound so we can hear when a new reservation comes in. The other thing is that i need the customers to receive a confirmation email and possibly sms that their reservation has been confirmed. I use sendhub to send text messages and im wondering if a freelancer can use that API so that it can use an automatically generated message that i create together with the customers info and send them a text and email to let them know we received their request.