こちら
こちら
pronoun
this way, this person (polite)
1.
this way, here (polite)
A polite demonstrative for direction or location near the speaker.
2.
this person (polite introduction)
Used when politely introducing someone.
3.
I, we (humble)
Used humbly to refer to oneself or one's group.
こちらこそ、ありがとうございます。
Thank you, too. / I should be the one thanking you.
こちら is the polite equivalent of ここ. It's used in formal situations, customer service, and polite introductions. こちらへどうぞ is commonly heard in shops and restaurants. When introducing people, こちらは〜さんです is the polite form. こちらこそ is used to return a greeting or thanks.