Excuse me, who are you?

Excuse me, who are you to say that?	Disculpe, ¿quién es usted para decir eso?
Excuse me, who are you looking for?	Perdone, ¿a quién busca?
Excuse me, who are you?	Disculpe, ¿quién es usted?
Excuse me, who are you? This is Dr. Mallick.	Este es el Doctor Mallick.
Excuse me, who are you?	Perdóneme, ¿quien es usted?
Excuse me, who are you repped by?	Disculpe, ¿quién es su representante?
Excuse me, who are you?	Perdone, ¿quién es usted?
Excuse me, who are you'?	Disculpa, ¿quién eres tú?
Excuse me, who are you?	Perdone, ¿quién es Ud.?
Excuse me, who are you?	Perdone, ¿Quién es usted?
Excuse me, who are you?	Disculpe. ¿Quién es usted?
Excuse me, who are you?	Perdón, ¿quien es UD.?
Excuse me, who are you?	¿Pero quiénes son ustedes?
Excuse me, who are you?	Perdona pero... tu quien eres?
Excuse me, who are you again? Floyd Rosenberg.	Perdón, ¿quién dices que eres?
Is Mr. Ayala available? - Excuse me, who are you?	¿Está el señor Ayala? - Disculpe, ¿quién es usted?
Excuse me, who are you? This is my party and I didn't invite you.	Disculpa, ¿quién eres? Esta es mi fiesta y yo no te invité.