Use filebeat to read CSV data

filebeat.yml

# Data is from https://www.sciencedirect.com/science/article/pii/S2352340918315191

filebeat.inputs:
- type: stdin

setup.template.overwrite: true
setup.template.append_fields:
- name: arrival_date
  type: date

processors:
  - decode_csv_fields:
     fields:
       message: "message"
     separator: ","
     ignore_missing: false
     overwrite_keys: true
     trim_leading_space: true
     fail_on_error: true
  - drop_fields:
      fields: [ "log", "host", "ecs", "input", "agent" ]
  - extract_array:
      field: message
      mappings:
        is_canceled: 0
        lead_time: 1
        arrival_date_year: 2
        arrival_date_month: 3
        arrival_date_week_number: 4
        arrival_date_day_of_month: 5
        stays_in_weekend_nights: 6
        stays_in_week_nights: 7
        adults: 8
        children: 9
        babies: 10
        meal: 11
        country: 12
        market_segment: 13
        distribution_channel: 14
        is_repeated_guest: 15
        previous_cancellations: 16
        previous_bookings_not_canceled: 17
        reserved_room_type: 18
        assigned_room_type: 19
        booking_changes: 20
        deposit_type: 21
        handling_agent: 22
        company: 23
        days_in_waiting_list: 24
        customer_type: 25
        adr: 26
        required_car_parking_spaces: 27
        total_of_special_requests: 28
        reservation_status: 29
        reservation_status_date: 30
  - drop_fields:
      fields: [ "message" ]
  - drop_fields:
      when:
        equals:
          company: "NULL"
      fields: [ "company" ]
  - drop_fields:
      when:
        equals:
          handling_agent: "NULL"
      fields: [ "handling_agent" ]
  - script:
      lang: javascript
      id: my_filter
      source: >
        function process(event) {
          var months = []
          months["January"] = '01'
          months["February"] = '02'
          months["March"] = '03'
          months["April"] = '04'
          months["May"] = '05'
          months["June"] = '06'
          months["July"] = '07'
          months["August"] = '08'
          months["September"] = '09'
          months["October"] = '10'
          months["November"] = '11'
          months["December"] = '12'
          // identify a header line and drop the event
          if (event.Get('is_canceled') == 'IsCanceled') {
            event.Cancel()
            return;
          }
        
          // special case, children can be "NA", but we want this to be a number
          if (event.Get('children') == 'NA') {
            event.Delete('children')
          }
 
          // trim some strings that are known to be long
          event.Put("assigned_room_type", event.Get("assigned_room_type").trim());
          event.Put("deposit_type", event.Get("deposit_type").trim());
          event.Put("reserved_room_type", event.Get("reserved_room_type").trim());
          event.Put("meal", event.Get("meal").trim());
          // never forget the booleans!
          event.Put("is_canceled", event.Get("is_canceled") == "true");
          event.Put("is_repeated_guest", event.Get("is_repeated_guest") == "true");
          // proper date construction
          var day_of_month = event.Get("arrival_date_day_of_month")
          if (day_of_month.length == 1) day_of_month = '0' + day_of_month
          var month = event.Get("arrival_date_month")
          var year = event.Get("arrival_date_year")
          event.Put('arrival_date', year + "-" + months[month] + "-" + day_of_month)
          event.Delete('arrival_date_day_of_month')
          event.Delete('arrival_date_month')
          event.Delete('arrival_date_year')
          event.Delete('arrival_date_week_number')
        }
# TODO construct proper date
  - convert:
      fail_on_error: false
      ignore_missing: true 
      fields:
        - { from : "stays_in_weekend_nights", type : "integer" }
        - { from : "days_in_waiting_list", type : "integer" }
        - { from : "stays_in_week_nights", type : "integer" }
        - { from : "required_car_parking_spaces", type : "integer" }
        - { from : "total_of_special_requests", type : "integer" }
        - { from : "children", type : "integer" }
        - { from : "previous_cancellations", type : "integer" }
        - { from : "booking_changes", type : "integer" }
        - { from : "adults", type : "integer" }
        - { from : "arrival_date_day_of_month", type : "integer" }
        - { from : "previous_bookings_not_canceled", type : "integer" }
        - { from : "arrival_date_week_number", type : "integer" }
        - { from : "babies", type : "integer" }

    

output.elasticsearch.hosts: "localhost:9200"
#output.console.pretty: true

hi,
Could you please tell me---
case: .csv file having 3 columns and one of the columns having multiple lines of data and also enter separated, so how to get those data in correct rows and columns?