/// <summary>
        /// Update eTicketNumber to the travel request flight
        /// </summary>
        /// <param name="id">flight id for which eTicketNumber has to be updated</param>
        /// <param name="eTicketNumber">eTicketNumber</param>
        /// <returns>true on success, false otherwise</returns>
        public Boolean UpdateETicketNumber(int RequestID, int Flightid, string eTicketNumber, int updated_by, int PaxID)
        {
            DAL_TRV_Request TRequest = new DAL_TRV_Request();

            try { return(TRequest.Update_eTicketNumber(RequestID, Flightid, eTicketNumber, updated_by, PaxID)); }
            catch { throw; }
        }