tttjjj/elt_bench huggingface dataset:
account_id: The unique identifier of the Account that sent or received the message.
body: The text of the message.
created_at: The timestamp indicating when the message was created.
date_sent: The timestamp indicating when the message was sent.
direction: The direction of the message.  Can be inbound for incoming messages, outbound-api for messages initiated by a REST API, outbound-call for messages initiated during a call, or outbound-reply for messages initiated in response to an incoming message.
error_code: The error code associated with the message, if applicable.
error_message: The description of the error_code if your message status is failed or undelivered. If the message was successful, this value is null.
message_from: The phone number or sender ID that sent the message.
id: The unique identifier for the message.
messaging_service_sid: The unique identifier of the messaging service associated with the message.
num_media: The number of media (e.g., images, videos) included in the message.
num_segments: The number of segments the message contains. A message body that is too large to be sent in a single SMS message is segmented and charged as multiple messages. Inbound messages over 160 characters are reassembled when the message is received. Note, when using a Messaging Service to send messages, num_segments will always be 0 in Twilio's response to your API request.
price: The cost of the message.
price_unit: The currency unit for the message cost.
status: The status of the message. Can be accepted, scheduled, canceled, queued, sending, sent, failed, delivered, undelivered, receiving, received, or read (WhatsApp only).
message_to: The phone number or recipient ID that received the message.
updated_at: The timestamp indicating when the message was last updated.