Hi,
This is Mr, Dilip gorasia and have 10+ years of extensive experience in web development and also have customized many open sources too, and would like to do this job for you with your 100% satisfaction guarantee.
About this job:
I see your requirement and based on your requirement, i would like to suggest you OSTicket opensource and in that you can manage ticket system with pop / IMAP Server for automated email ticket creation too.
For chat, we can implement any other open source.
About my expertise:
I do have vast experience in Core PHP, Smarty, MySql, MVC Structure, OOPS etc.. Opensources like prestashop, joomla, phpbb, wp, osDate, osTicket etc... and also can adopt new codding style very quickly. and i can show you a list of my php websites when you would like to have a look.
Also, the budget might be little high of mine but compared to this budget, you will get 100% satisfaction as well as 100% quality work and most important thing is help / support, and form me, you will get 100% support until you get satisfied from my work and due to this reason, my price might be little bit high compared to others.
looking forward for your reply.
Thanks,
Dilip