Bestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TURBestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TURBestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TURBestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TURBestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TURBestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TURBestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TURBestest:Expert]What is the best day of the week to book Turkish Airlines?TUR_TUR