お・
Use お・ご～する when you or someone on your side performs an action connected to a person you are treating with respect. It presents the actor humbly rather than raising the person who performs the action.
Who is being humble?
The sentence describes an action by the speaker's side, but that action must meaningfully affect or relate to the respected person—for example, by assisting, guiding, contacting, sending something to, or explaining something to that person.
Two common patterns
The first example uses the native-verb pattern; the second uses a Sino-Japanese verbal noun.
Choosing the prefix
お is generally used with native Japanese verbs, while ご is generally used with Sino-Japanese verbal nouns. These are tendencies, not a rule that can be applied mechanically to every word, so learn the conventional form with each verb.
Humble actor or respected subject?
お・ご～する lowers the speaker's side. By contrast, お・ご～になる respectfully raises the person who performs the action. Check the subject before choosing between them.
More examples
お客様を出口までお送りします。
I will accompany the customer to the exit.
Analyze担当者がお客様に後ほどご連絡します。
The person in charge will contact you later.
Analyzeご注文の品を明日の午前中にお届けします。
We will deliver your order tomorrow morning.
Analyze部長に調査の結果をご報告しました。
I reported the results of the investigation to the department manager.
Analyze先生のご質問にお答えします。
I will answer the teacher's question.
Analyze後ほど見積書をお送りします。
I will send the estimate later.
Analyze