code: public static AirlineItineraryTemplateBuilder addAirlineItineraryTemplate(
  			String introMessage, String locale, String pnrNumber,
  			BigDecimal totalPrice, String currency) {
  		return new AirlineItineraryTemplateBuilder(introMessage, locale,
  				pnrNumber, totalPrice, currency);
  	}
docs: Adds an Airline Itinerary Template to the response.
  
  @param introMessage
  the message to send before the template. It can't be empty.
  @param locale
  the current locale. It can't be empty and must be in format
  [a-z]{2}_[A-Z]{2}. Locale must be in format [a-z]{2}_[A-Z]{2}.
  For more information see<a href=
  "https://developers.facebook.com/docs/internationalization#locales"
  > Facebook's locale support</a>.
  @param pnrNumber
  the Passenger Name Record number (Booking Number). It can't be
  empty.
  @param totalPrice
  the total price of the itinerary.
  @param currency
  the currency for the price. It can't be empty. The currency
  must be a three digit ISO-4217-3 code in format [A-Z]{3}. For
  more information see <a href=
  "https://developers.facebook.com/docs/payments/reference/supportedcurrencies"
  > Facebook's currency support</a>
  @return a builder for the response.
  @see <a href=
  "https://developers.facebook.com/docs/messenger-platform/send-api-reference/airline-itinerary-template"
  > Facebook's Messenger Platform Airline Itinerary Template
  Documentation</a>