Message repetition

Hello! I need some help with my code. The expected output of the code below is:
user : Solar Energy of “one of the specified cities”, the bot shows the form to prompt the user of the data then user clicks on submit then the bot displays solar energy is “certain number”. However, when the user clicks on submit the bot repeats the first message that is Solar Energy of “certain city”, then shows the solar energy value.

import os
import streamlit as st
from displayer import bot_template, user_template
from dotenv import load_dotenv
from langchain_openai import ChatOpenAI
from langchain.schema import SystemMessage, HumanMessage, AIMessage
from ML.Ml import CityWeatherData

def init():

    # Loading OpenAI API key
    if os.getenv("OPENAI_API_KEY") is None or os.getenv("OPENAI_API_KEY") == "":
        print("OPENAI_API_KEY is not set yet")
        print("OPENAI_API_KEY is set")

def main():

    # Initialize LangChain Chat
    chat = ChatOpenAI(temperature=0)

    if "messages" not in st.session_state:
        st.session_state.messages = [
            SystemMessage(content="You are a helpful assistant.")
    form_submission = False  #Boolean variable to track whether the form is submitted
    st.header("Green Optimizer 🤖")

    with st.sidebar:
        user_input = st.text_input("Enter your message:")
        if user_input:
        #if user_input:
            with st.spinner("Thinking.."):
                if any(city in user_input.lower() for city in ["jeddah", "skaka", "riyadh", "dammam"]):
                    user_city = None
                    for city in ["jeddah", "skaka", "riyadh", "dammam"]:
                        if city in user_input.lower():
                            user_city = city

                    # If city name is found, proceed with solar energy analysis
                    if user_city:
                        # Display the form for user input
                        st.write(f"Welcome! Please enter the following information for {user_city.capitalize()}:")
                        with st.form(key='weather_form'):
                            ALLSKY = st.number_input("Enter ALLSKY:")
                            CLRSKY = st.number_input("Enter CLRSKY:")
                            pressure = st.number_input("Enter pressure:")
                            temperature = st.number_input("Enter temperature:")
                            moisture = st.number_input("Enter moisture:")

                            submit_button = st.form_submit_button(label='Submit')

                        # If the form is submitted, calculate and display the result
                        if submit_button:
                            form_submission = True
                            # Create CityWeatherData instance
                            weather_data = CityWeatherData(city=user_city)

                            # Analyze weather for the selected city
                            solar_energy = weather_data.analyze_weather(
                                ALLSKY=ALLSKY, CLRSKY=CLRSKY, temperature=temperature, pressure=pressure, moisture=moisture
                            # Append the user and AI messages to the conversation
                            st.session_state.messages.append(AIMessage(content=f"The Solar Energy in {user_city.capitalize()} is: {solar_energy}"))

                        # If no valid city name is found, proceed with regular chat
                        response = chat(st.session_state.messages)
                    # If no city name is mentioned, proceed with regular chat
                    response = chat(st.session_state.messages)

    # Displaying all the messages the user had by fetching them
    messages = st.session_state.get("messages", [])

    # Looping through all the messages, if 1 user(odd number) display it from the human position.
    # If two users(even number) display it from the bot position.
    for i, msgs in enumerate(messages[1:]):
        if i % 2 == 0:
            st.markdown(user_template.replace("{{MSG}}", msgs.content), unsafe_allow_html=True)
            st.markdown(bot_template.replace("{{MSG}}", msgs.content), unsafe_allow_html=True)

if __name__ == '__main__':

Many Thanks in Advance!

Can you post a minimal reproducible code?