"Igualmente". For example: Person A: "Have good night". Person B: "The same to you". It will be in spanish: Persona A: "Buenas Noches". Persona B: "Igualmente". Saludos

this is easy just look... Person A: have a nice day(night), see you later, i wish you luck Person B: The same to you, or, You too

Hola, Elin. Lo mismo para ti.