Rasa: Button attached to a response

I want to put a button attached to my chatbot’s response. I don’t understand because my chatbot doesn’t return the button. Do you have the solution?

button = [
  {
    "title": "Search",
    "payload": "/search",
  }
]
response = "my text"
dispatcher.utter_message(buttons=button,text=response)

Response

I have already tried to add additional buttons in the table, not to store the table in a variable and to use it directly in utter_message()