

Copy the below piece of sample code in the Trigger Handler: 

response = Map();
response.put("action", "reply");
response.put("replies", {
    {
        "text": "Hey! How may I assist you?"
    }
});
options = {
    "Book a table",
    "Order online",
    "Book a room",
    "Just browsing"
};
response.put("suggestions", options);
return response;