お名前を尋ねる時に、一般的な言い方はWhat’s your name?ですが、受付で少しフォーマルな感じで聞きたいのであれば、
May I ask your name?と言います。
他のMay I have your name?, May I know your name?の動詞が違うのですが、意味と印象が一緒です。
この言い方はお名前と限らず、いろんな場面で使います。
住所を尋ねるとき
May I ask your address? May I have your address? May I know your address?
Hello- will get their attention. "May I ask who you are?" Asks them to tell you their name.
Hello, I am (your name) - will get their attention and introduces yourself. "And you are?" Will prompt them to introduce themselves.
"Helloで相手の注意を引きます。
May I ask who you are?
相手に名前を尋ねる表現です。
Hello, I am (あなたの名前)
相手の注意を引き、自己紹介を始めます。
And you are?
相手に自己紹介をするように促す表現です。"
1. Hi, my name's Mike. You're new here, aren't you?
2. Excuse me, who are you?
3. Excuse me, what are you doing here?
1. Here you introduce yourself and explain that you believe this person to be a new employee. Unless this person is socially inept, they will introduce themselves.
Socially inept = such a person either has little skill in socialising, or is clumsy in the way that they do.
2. In these days of security and terrorism, everyone expects to be challenged if it is not obvious that they are authorised to be in a place such as a business office or manufacturing plant. Usual forms of politeness do not apply here.
3. A direct challenge to the person concerned to state his reason for being in that location.
A: Hello! I'm Denton. Who are you?
B: I'm Kelly. I am new here.
A: Hi there! What is your name?
B: I'm Susan. Who are you?
例１
A: Hello! I'm Denton. Who are you?（こんにちは！デントンです。あなたは誰？）
B: I'm Kelly. I am new here.（ケリーです。新人です）
例２
A: Hi there! What is your name?（やあ！あなたの名前は？）
B: I'm Susan. Who are you?（スーザンです。あなたは誰？）
Hi there stranger! My name is Scobie, please introduce yourself...
It is quite in order to ask some one to formally "introduce themselves..."
In a friendly manner ...we would start by giving our own name...and then ask the stranger to identify themselves, (by name and position...)
"Hi there stranger! My name is Scobie, please introduce yourself."
きちんと自己紹介をするようにお願いすることは極めて適切なことです。気さくなやり取りでは、自分の名前を言ってから、相手に自己紹介（名前、職業）するように言います。
例文
"Hi there stranger! My name is Scobie, please introduce yourself."
こんにちは。私はScobieです、自己紹介をお願いします
The first example is the easiest and most direct way to ask someone, "what is your name." Secondly we can ask for the permission of knowing their name with the phrase, "may I ask," or also to ask, "who I'm speaking to," to have the same information.
アメリカ合衆国 
日本 
南アフリカ 
ニュージーランド 
イギリス 
