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Crafting a system prompt for an AI sales coach

Crafting a system prompt for an AI sales coach

Role

Product Designer

UX Designer

UX Researcher

Prompt Designer

Tools

Figma

Figjam

Timeline

3 weeks

Team

Rocket Pro

CONTEXT

Rocket Pro Navigate

Released on October 1st, 2025, Rocket Pro Navigate is a custom large language model designed to assist 25,000+ mortgage brokers. This technology is meant to help brokers with general day-to-day tasks, answer common questions while also providing specific custom apps that are tailored to key business functions. 

PROBLEM

Mortgage brokers lack the tools to actively practice speaking to clients.

Outside of direct interactions with clients, it's hard for mortgage brokers to practice different scenarios.

TASK OVERVIEW

Provide support to mortgage brokers with AI

As part of the Navigate experience, Rocket Pro wanted to add premade custom apps that can assist mortgage brokers with a variety of tasks.


My task was to not only understand the different apps that are going to be made, but also create the prompt for them. My PM and mentor shared with me a rough outline of several custom apps and I immediately got started brainstorming different ways to tackle the problem.

SOLUTION

Designing AI-driven sales roleplay scenarios to automate broker coaching.

I designed an AI-powered roleplay tool that lets brokers practice real sales scenarios on demand, without needing a real client.

IDEATION

Reviewing the brief, I noticed three proposed apps: sales plays, client roleplay, and objection handling. All three were solving the same core problem: brokers needed a way to practice and build confidence. I pitched consolidating them into a single Sales Coach app. My PM was immediately on board.

Reviewing the brief, I noticed three proposed apps: sales plays, client roleplay, and objection handling. All three were solving the same core problem: brokers needed a way to practice and build confidence. I pitched consolidating them into a single Sales Coach app. My PM was immediately on board.

RESEARCH

Without direct experience as a mortgage broker, I relied on empathy to understand the problem. I mapped the journey of a new loan officer to identify where confidence breaks down and where Navigate could intervene.

Reviewing the brief, I noticed three proposed apps: sales plays, client roleplay, and objection handling. All three were solving the same core problem: brokers needed a way to practice and build confidence. I pitched consolidating them into a single Sales Coach app. My PM was immediately on board.

BENEFITS

How will this help mortgage brokers?

This custom app will provide many benefits to mortgage brokers:

While I can't show the app in action, I can provide some context on the content design!

While I can't show the full system prompt, I can provide some context on the conversation design!

TONE & LANGUAGE

Ensuring positivity

To ensure a productive learning environment, the LLM's persona was carefully designed. These are some of the many ways to describe the LLM's tone:

Empowering

Build the user’s confidence in every interaction.

Build the user’s confidence in every interaction.

Supportive

Offer constructive, nonjudgmental feedback — never condescending.

Offer constructive, nonjudgmental feedback — never condescending.

Professional

Use polished, business-appropriate language without sounding robotic.

Use polished, business-appropriate language without sounding robotic.

Conversational

Be clear and easy to understand — avoid jargon unless the user indicates expertise.

Be clear and easy to understand — avoid jargon unless the user indicates expertise.

Emotionally intelligent

Understand the emotional stakes of borrower conversations and reflect empathy in advice.

Understand the emotional stakes of borrower conversations and reflect empathy in advice.

DIALOGUE

Understanding conversation

Rather than the typical prompt-response format, it’s a two-way dialogue between the mortgage broker and a fictional client. Conversations can take so many different turns and the prompt has to account for some of these key questions:

  • What if the user wants to end the conversation to prompt again?

  • How should the AI respond if the user's answer is not a direct response to the last statement?

  • How should the AI prompt the user for their next action?

  • What is the prospect's background and emotional state?

FINAL DESIGN

Rocket Pro Navigate: Sales Coaching App

These were some of the most highly anticipated apps that came out of Rocket Pro Navigate and my prompt was a major contributor in their development. The feature is expected to boost the confidence of mortgage brokers of all skill levels. I attached some screenshots to provide more context on how a typical conversation would play out.

NEXT STEPS

How do we know if Rocket Pro Navigate works?

The job is never finished. Here is the next step I would take if I had more time with this project:

  1. Measure effectiveness of Rocket Pro Navigate: Sales Coach with KPIs

Measure whether Navigate reduces time-to-confidence for new loan officers. Key signals would include session frequency in the first 30 days, whether brokers who complete three or more roleplay sessions before their first client call convert at a higher rate, and whether Navigate usage correlates with faster ramp time compared to brokers who don't use it.