Creating Form Status Check By Customer

Hi All,

I have a requirement to build one form for users, that will include a set of fields.
Once a form is submitted we need to email the acknowledgment with a reference number to the user. This reference number should be stored in the database so that when the customer comes to the website again s/he should be able to know the status of the inquiry.

On the admin end, the pdf needs to be sent to the email account with all the related form data. The admin will have an option of changing the reference number status through the wp-admin dashboard.

I haven’t done this before and I’m not aware of how we can do this in WordPress using a plugin.
Please let me know about it. Thanks!