Detailed Explanation:

You should make an SMS conversation website $-$ similar to Messaging app on our phones.

We should be able to:

Create a contact with the phone number

Send an SMS to the number through a clean UI

Receive an SMS from the clients

Clear Conversation History

Clear list of numbers we've communicated with

Must be able to attach photos with the SMS

$[$IMP$]$ Must be able to schedule the SMS to send automatically in the future

Should also be accessible through mobile phone browser

After this is done:

You should link Facebook Ads API to this SMS platform.

It should be able to:

As soon as someone fills Facebook Lead Form and submits it$,$ it should send a webhook to our SMS platform $($Webhook is provided by FB$)$

Our SMS should accept the Webhook and send an automated SMS within the first $2$ minutes of them submitting the form $($we should be able to set

how soon the automated SMS should be sent$)$

This SMS platform should be able to retrieve all the information a lead sent via Lead Form.