have an appointment
I have an appointment on Monday.
Sólo quiero hacerte saber que yo tengo una cita romántica.
I just wanted to let you know that I have a romantic date.
I have a prior appointment.
I have a date tonight.
Tengo una cita dentro de media hora.
I have an appointment in half an hour.
Tengo una cita para visitar a un gurú en la India.
I have an appointment to visit a guru in India.