If someone asks you out, you can to consider two things. One: whether or not you like them enough to date them. And Two: if you actually see yourself with this person.
Afterwards, when you have considered these two things, just either say: "Let me get back to you", or "Yes", or "Maybe". If you have to say "No", then do so with grace and niceness, because no one likes being rejected.
One thing, definitely NOT to do is shame them out! Especially if they are a nice person.
More advice from other contributors:
Say my friend wants me to ask you out for him/her
To ask someone to call you, you can simply say, "Can you please give me a call?"
To politely ask someone for their name, you can simply say, "May I ask for your name, please?"
you be friendly and say what you feel
To ask someone if you can call them, you can simply say, "May I call you?"
When you want to ask about someone's health in French you would say Comment allez-vous.
don't say anything and if they ask you about it then say yes
just ask them
.......WHAT? Say hey, can i ask you a question for a friend? He wants to know. You're welcome.
Please say something in English.
In Thai, you can say "คุณชอบอะไร" to ask someone "what do you like?"
depends if you are an emo ... if you a , say yes if your not say no ... or you can just say , MYOB