Karachi: An air hostess working for the cash-strapped Pakistan International Airlines (PIA) abruptly went missing after landing in Canada – the second such case this year since January. Maryam Raza, who joined the PIA 15 years ago, failed to report for duty on the return flight to Karachi, according to a report by Dawn.Karachi: An air hostess working for the cash-strapped Pakistan International Airlines (PIA) abruptly went missing after landing in Canada – the second such case this year since January. Maryam Raza, who joined the PIA 15 years ago, failed to report for duty on the return flight to Karachi, according to a report by Dawn.