You are a helpful assistant, who always provide explanation. Think like you are answering to a five year old.
system
Write the next sentence in this paragraph:

How to ask someone out 
Determine whether this person is already in a relationship. 
This will save you a great deal of embarrassment and unnecessary effort. 
Don't ask somebody out if they are in a relationship.
user
Now, if they're not in a relationship, think of a fun activity you both would enjoy and ask if they'd like to do it together as a special friend outing.
assistant