Rasa forms - slot filling not acting as supposed

Rasa Open Source
1

Hi! I’m relatively new to Rasa and I’m finding difficult to recreate a fairly easy use case. The use case is the following:

- User: Hi! I'd like to transfer some money to Joe!
- Bot: You are going to send money to Joe
- Bot: How much do you want to transfer?
- User: How much money do I have in my bank account?
- Bot: You have X amount of money
- Bot: How much do you want to transfer?
- User: I want to transfer money to Mark instead.
- Bot: You are going to send money to Mark
- Bot: How much do you want to transfer?
- User: 100 dollars.
- Bot: Great! You will send 100 dollars to Mark.

So, If i’m not mistaken, the best way to deal with a use case similar to this one is by using forms. More particularly, a form that would fill the slot “value”. As far as I know, I can extract the entity “person” in the first sentence and associate it with a slot with the same name, without having to have a form.

This is my domain.yml.

**intents**:

- transfer
- balance
- inform

**entities**:

- person
- value

**slots**:

  person:

    type: text

    mappings:

    - type: from_entity

      entity: person

  value:

    type: float

    mappings:

    - type: from_entity

      entity: value

**forms**:

  amount_form:

    required_slots:

        - value

**responses**:

utter_transfer:
- text: "You are going to send money to {person}"

utter_ask_value:
- text:"How much do you want to transfer?"

utter_balance:
- text:"You have X amount of money"

utter_submit:
- text:"Great! You will send {value} dollars to {person}"

This is my nlu.yml:

intent: transfer
examples: |
   - Hi! I'd like to transfer some money to [Joe](person)!
   - I want to transfer money to [Mark](person) instead.
   - I want to send money to [John](person)
   - Please, help me transfer to [Sophie](person).

intent: balance
examples: |
   - How much money do I have in my bank account?
   - How much money do I have?
   - Do I have money?

intent: inform
examples: |
   - [100](value) dollars
   - [10](value)
   - [200](value) euros

And finally, this is my rules.yml:

- rule: amount form activation
  steps:
  - intent: transfer
  - action: utter_transfer
  - action: amount_form
  - active_loop: amount_form

- rule: submit amount form
  condition: 
  - active_loop: amount_form
  steps:
  - action: amount_form
  - active_loop: null
  - action: utter_submit

- rule: ask for balance
  steps:
  - intent: balance
  - action: utter_balance

Probably, there is something missing. This is the execution that I’m getting from my chatbot.

- User: Hi! I'd like to transfer some money to Joe!
- Bot: You are going to send money to Joe
- Bot: How much do you want to transfer?
- User: How much money do I have in my bank account?
- Bot: You have X amount of money
- Bot: How much do you want to transfer?
- User: I want to transfer money to Mark instead.
- Bot: You are going to send money to **Joe**
- Bot: How much do you want to transfer?
- User: 100 dollars.
- Bot: Great! You will send 100 dollars to **Joe**.

I didn’t change the default config.yml file. Thank you so much in advance!

2

Quick sidenote, but shouldn’t John be a person?

1 Like
3

Quick check; could you confirm the Rasa version that you’re using? You can easily check by running python -m rasa --version.

4

Yeah, it should. Thanks, I just edited

5

3.0.3

6

I’m wondering a bit about your form design. You’d like to send money to a specific person, correct? Shouldn’t the form, therefore, have a name and a value in it? You may want to send money to two persons and in such a case you’d like to be able to declare the name of the person on each transaction.

7

Also, since you mentioned you were a beginner … are you aware of our learning center?

The big conversational AI with Rasa course has two segments that may be relevant: Basic Forms and Custom Forms, but there’s also an entire course on forms here.