Why does the code terminates after once the user asks query

Question

This is a code for a virtual assistant this code terminates after the user speaks once. I need this code to iterate till the user says exit. I tried using 'while True' after 'if name == "main": wishme()' it runs, but in that case it does not show the tkinter window. Can you help me please? Here is my code

import pyttsx3
import speech_recognition as sr
import datetime
import wikipedia
import webbrowser
import os
import smtplib
from tkinter import *

root = Tk()

engine = pyttsx3.init('sapi5')
voices = engine.getProperty('voices')

print(voices[0].id)

engine.setProperty('voice', voices[0].id)


def speak(audio):       
    e1 = Text(root)
    e1.grid(row=0, column=0)
    engine.say(audio)
    engine.runAndWait()
    t = Text(root)
    t.grid(row = 0, column = 0, 
        columnspan = 2, rowspan = 2, padx = 5, pady = 5) 
    t.insert(END, 'Genos says: '+ audio +'\n')



def wishme():
    hour = int(datetime.datetime.now().hour)
    if hour>=0 and hour<12:
        speak("Good Morning sir")

    elif hour>=12 and hour<18:
        speak("Good Afternoon sir")

    else:
        speak("Good Evening sir")    
    speak("I am Genos. How can I Serve you?")
    return

def takecommand():
    # it takes mic input from the user and return string output

    r = sr.Recognizer()
    with sr.Microphone() as source:
        print("Listening...")
        r.pause_threshold = 1
        audio = r.listen(source)

    try:
        print("Recognizing..")
        query = r.recognize_google(audio, language='en-in')
        print(f"user Said :{query}\n")

    except Exception as e:
        print(e)

        print("Say that again please")
        return "None"
    t1 = Text(root)
    t1.grid(row = 0, column = 2, 
       columnspan = 2, rowspan = 2, padx = 5, pady = 5)  
    t1.insert(END, 'user says: '+query+'\n')
    return query

def sendEmail(to, content):
    server = smtplib.SMTP("smtp.gmail.com", 587)
    server.ehlo()
    server.starttls()
    server.login('your email@gmail.com','password')
    server.sendmail('your email@gmail.com',to,content)
    server.close()
    return

if __name__ == "__main__":
    wishme()
    #while True:
    if 1:
        query = takecommand().lower()


#Logic for executing task based query 
        if 'wikipedia' in query:
            speak('searching Wikipedia....')
            query = query.replace("wikpedia", "")
            results = wikipedia.summary(query, sentences=5)
            speak("According to wikipedia")
            print(results)
            speak(results)

        elif 'open youtube' in query:
             webbrowser.open("youtube.com")

        elif 'open google' in query:
             webbrowser.open("google.com")

        elif 'open stackoverflow' in query:
             webbrowser.open("stackoverflow.com")

        elif 'play music' in query:
            music_dir = 'D:\\SAHIL\\$ONGS_MJ'
            songs = os.listdir(music_dir)
            print(songs)
            os.startfile(os.path.join(music_dir, songs[0]))

        elif 'the time' in query:
            strTime = datetime.datetime.now().strftime("%H:%M:%S")
            speak(f"Sir the time is {strTime}")

        elif 'open code' in query:
            codepath = "C:\\Users\\Sahil\\AppData\\Local\\Programs\\Microsoft VS Code Insiders\\Code 
- Insiders.exe"
        os.startfile(codepath)

    elif 'email to sahil' in query:
        try:
            speak("What should i say ?")
            content = takecommand()
            to = "your email11@gmail.com"
            sendEmail(to, content)
            speak("Email has been sent")
        except Exception as e:
            print(e)
            speak("Could nott send the email ")

    elif 'open mailbox' in query:
        webbrowser.open("gmail.com");

    elif 'exit' in query:

        exit()     

root.mainloop()