RASA: All Intents Showing 1.0 Confidence, Even with Random String Messages

Question

I've recently started working with RASA and I'm encountering challenges with intent confidence. Regardless of the input message, even if it's a random string like "3sdfhadhfoae 973 hdkjhsf d", RASA consistently assigns a confidence score of 1.0 to the intent 'zypher_connect' (In my case zypher_connect intent). I'm unsure why this is happening.

I've shared the relevant files here

nlu.yml

version: '3.1'

nlu:
  - intent: zypher_connect
    examples: |
      - hey
      - hello
      - hi
      - hello there
      - good morning
      - good evening

 - intent: connect_agent
    examples: |
      - could you please connect me to agent?
      - Can you transfer my call to an agent, please?
      - I'd like to speak with an agent. Could you connect me, please?
      - Is it possible to get in touch with an agent right now?
      - I need assistance from an agent. Can you connect me to one?
      - Could you transfer me to a customer service representative?

  - intent: flight_status
    examples: |
      - What's the status of my flight, [BA123](flight_no)?
      - Can you check if my flight, [LH456](flight_no), is delayed?
      - I'd like to know the status of flight [AF789](flight_no).
      - Is my flight, [QR321](flight_no), on time?
      - Can you provide the current status of flight [EK654](flight_no)?
      - Has flight [AA987](flight_no) landed yet?

rules.yml

version: '3.1'

rules:
  - rule: Ask the user to rephrase whenever they send a message with low NLU confidence
    steps:
    - intent: nlu_fallback
    - action: utter_please_rephrase

stories.yml

version: '3.1'

stories:
  - story: path about agent connect
    steps:
      - intent: connect_agent
      - action: action_agent

  - story: path about zypher connect
    steps:
      - intent: connect_zypher
      - action: action_zypher

  - story: path about flight status
    steps:
      - intent: flight_status
      - action: action_flight_status

  - story: handle fallback
    steps:
    - intent: nlu_fallback
    - action: action_default_fallback 

domain.yml

version: '3.1'

intents:
  - connect_agent
  - connect_zypher
  - flight_status

actions:
  - action_agent
  - action_zypher
  - action_flight_status

session_config:
  session_expiration_time: 60
  carry_over_slots_to_new_session: true

Can someone explain why this is going on and offer some advice on how to fix it?