我如何在电报机器人中以链接的形式返回用户用户名，以便我只需单击它并直接与他们聊天

import requests

# 电报机器人的令牌
bot_token = "YOUR_BOT_TOKEN"

# 获取用户的用户名
def get_username(update):
    username = update["message"]["from"]["username"]
    return username

# 发送带有链接的消息
def send_link_message(chat_id, username):
    message = f"点击这里与用户 {username} 聊天：[链接](https://example.com/chat/{username})"
    requests.get(f"https://api.telegram.org/bot{bot_token}/sendMessage?chat_id={chat_id}&text={message}&parse_mode=Markdown")

# 处理收到的消息
def handle_message(update):
    username = get_username(update)
    chat_id = update["message"]["chat"]["id"]
    send_link_message(chat_id, username)

# 监听消息
def listen_for_messages():
    offset = 0
    while True:
        response = requests.get(f"https://api.telegram.org/bot{bot_token}/getUpdates?offset={offset}")
        updates = response.json()["result"]
        for update in updates:
            handle_message(update)
            offset = update["update_id"] + 1

# 启动机器人
listen_for_messages()