osoreirimasuga,O san o onegai itashimasu
おそれいりますが、Oさんを おねがいいたします
Excuse me, but I would like to speak with Mr./Ms. O.
Example
おそれいりますが、たなかさんを おねがいいたします。
Excuse me, but I would like to speak with Mr./Ms. Tanaka.
osoreirimasuga,O san o onegai itashimasu
Excuse me, but I would like to speak with Mr./Ms. O.
おそれいりますが、たなかさんを おねがいいたします。
Excuse me, but I would like to speak with Mr./Ms. Tanaka.