public IHttpActionResult RemoveCustomer([FromUri] long customerId)
        {
            IHttpActionResult res    = null;
            Ticket            ticket = null;

            GetLoginToken();
            if (customerLoginToken == null)
            {
                return(Unauthorized());
            }
            FCS = FlyingCenterSystem.GetFlyingCenterSystemInstance();
            ILoggedInCustomerFacade customerFacade = FCS.GetFacade(customerLoginToken) as ILoggedInCustomerFacade;

            try
            {
                ticket = customerFacade.GetTicketByCustomerId(customerLoginToken, customerId);
                if (ticket != null)
                {
                    customerFacade.CancelTicket(customerLoginToken, ticket);
                    res = Ok($"Ticket with customer Id = {customerId} not found");
                }
            }
            catch (Exception e1)
            {
                res = BadRequest("Ticket hadn't been deleted " + e1.Message);
            }
            return(res);
        }