How can we make rasa reply one sentence at a time instead of several sentences at a time

Rasa Open Source
1

environment:

rasa-sdk = 2.8.5

rasa == 2.8.17

question:

my rule is

- rule: sale form + affirm
  condition:
  - active_loop: sale_form
  steps:
  - action: sale_form
  - active_loop: null
  - action: utter_sale_values
  - intent: affirm
  - action: utter_after_submit_sale_form
  - action: action_submit_instance_form

- action: utter_sale_values It means to reply all the sales form information to the user and ask whether to submit the form.

- intent: affirm Indicates confirmation of submission form

- action: utter_after_submit_sale_form Reply to the user “wait patiently”

- action: action_submit_instance_form Reply to the user “sales form submitted successfully”

What is returned now is:

[
    {
        "recipient_id": "test",
        "text": "wait patiently"
    },{
        "recipient_id": "test",
        "text": "sales form submitted successfully"    
    }
]

The problem encountered now is that after confirming the submission of the form, because the action of submitting the form takes a long time, the user cannot get a reply. After the action of submitting the form is completed, these two replies are returned to the user together.

I hope that after confirming the submission of the form, the robot can reply to the user “wait patiently”, and then reply to the user “sales form submitted successfully” after the form submission action is completed。

How can I reply “wait patiently” first, and then reply to the user after the form action is completed.?

thank you!