お客さん、こちらへどうぞ。
This way, sir/ma'am.
suffix
politeness marker
Attached to some nouns or na-adjectives to add a polite tone, often in service contexts or when addressing customers. Not used with all nouns; common examples include お客さん, お医者さん, お巡りさん.
お医者さんに診てもらいました。
I was seen by the doctor.
お巡りさんに道を聞いた。
I asked the police officer for directions.