The ISO country code where the ticket will be issued.

Type of funds preferred for reviewing monetary values, in ISO 4217 codes.

If true, flight service information should be returned in the response.

Identifies the context of the identifying code, such as DUNS, IATA or internal code, etc.

Indicates smoking is allowed when true and is not allowed when false.

A unique identifier to relate all messages within a transaction (e.g. this would be sent in all request and response messages that are part of an on-going transaction).

Used to specify passenger and fare information for which availablity is to be checked.

Air Availability Request preference information.

The starting value of the time span.

Identifies the alternate language for a customer or message. The human language is identified by ISO 639 codes.

Used to identify the sequence number of the transaction as assigned by the sending system; allows for an application to process messages in a certain order or to request a resynchronization of messages in the event that a system has been off-line and needs to retrieve messages that were missed.

Identifes the primary language preference for the message. The human language is identified by ISO 639 codes.

If true repricing is requested.

The department name or ID with which the contact is associated.

Specifies to whom the request should be targeted for the information that is to be returned.

Identifies pricing source, if negotiated fares are requested and if it is a reprice request.

Used to indicate whether the request is for the Test or Production system.

Specify airline to request availability for.

Refer to OTA Code List Travel Sector (TVS).

If true, only base fare information should be returned

The duration datatype represents a combination of year, month, day and time values representing a single duration of time, encoded as a single string.

Request flights that are e-ticketable in the response.

Used to provide the company common name.

A positive integer value that indicates the maximum number of responses desired in the return.

Indicates the creation date and time of the message in UTC using the following format specified by ISO 8601; YYYY-MM-DDThh:mm:ssZ with time values using the 24 hour clock (e.g. 20 November 2003, 1:59:38 pm UTC becomes 2003-11-20T13:59:38Z).

If true, booking class availability should be returned in the response for each of the flight segments.

Fare Type is specific to a specific fare and this is a request for a set of fares based on these qualifiers. Refer to OTA Code List 'Fare Qualifier' (FAQ).

Specific flight number to request availability for. Requires that Airline is also supplied.

When true, indicates the message is being re-sent after a failure. It is recommended that this attribute is used (i.e., set to TRUE) only when a message is retransmitted.

For all OTA versioned messages, the version of the message is indicated by a decimal value.

This indicates where this message falls within a sequence of messages.

If true, reduced data should be returned

Indicates the same flight number on the same airline regardless of number of stops in most cases.

Information regarding the number of stops made.

The ending value of the time span.

A collection of information that specifies how the message processing should occur or how the data should be returned.

Information used to specify a flight for which availablity is to be checked.

Request for flights in response that meet the given Department of Transport on-time rate. This is a number between 0 and 100.

It can be used to indicate whether the fare is public or private.

The Availability Request message requests Flight Availability for a city pair on a specific date for a specific number and type of passengers. Optional request information can include:
- Time / Time Window
- Connecting cities.
- Client Preferences (airlines, cabin, flight types etc.)
The request can be narrowed to request availability for a specific airline, specific flight, or specific booking class on a specific flight.
The availability request message contains similar information to a standard Airline CRS or GDS availability request message.

Identifies a company by the company code.

Request flights that have no more than the requested number of stops.

The division name or ID with which the contact is associated.

Specifies (at a high level) the type of search criteria for
this request.

A reference for additional message identification, assigned by the requesting host system. When a request message includes an echo token the corresponding response message MUST include an echo token with an identical value.

Identifies the type of cabin (i.e., first, business, economy) requested.

Specifies the order in which the information should be returned.

Indicator to identify whether or not the price is applicable only to private fares.