Pre-scripted Sales Chatbot for App

I need a mobile-app chatbot that focuses on one thing: turning visitors into qualified leads. All answers will come from a library of pre-written scripts that I will supply, so there is no need for open-ended AI generation—just reliable, rule-based replies triggered by user intent.

Here is what I’m looking for:

• Integration: The bot must plug seamlessly into my existing iOS and Android builds. If you prefer Dialogflow, Rasa, or a lightweight in-app SDK, let me know; I’m flexible as long as the final bundle installs cleanly and has minimal impact on load time.

• Script management: I want an easy way to edit or expand the reply library without redeploying the entire app—ideally a small web dashboard or a JSON file the app can fetch from a secure endpoint.

• Lead capture: Every relevant chat should end by asking for name, email, and phone, then posting that data to our REST endpoint and sending a confirmation message to the user.

• Analytics: Basic metrics (conversation count, drop-off point, leads captured) returned to Firebase or a comparable service so I can track performance.

Acceptance criteria
1. I can install your module, update the response set, and see the bot live in TestFlight/Google Play internal testing within five business days of code delivery.
2. Lead data arrives in the correct format at my endpoint and is visible in analytics.
3. No crashes or UI glitches across the latest two major iOS and Android versions.

Send a brief outline of your proposed tech stack, timeline, and any relevant examples from past chatbot projects, and we can get started right away.