In this task, you're given text messages in natural language. Your task is to classify those text messages based on their content into two classes: (1) Spam and (2) Ham messages. If the content of the given message is irrelevant to the receiver or is equally relevant to many other potential recipients then it must be labeled as ‘spam’, otherwise, it should be labeled as ‘ham’.

Example Input: That way transport is less problematic than on sat night. By the way, if u want to ask  n  to join my bday, feel free. But need to know definite nos as booking on fri. 
Example Output: ham

Example Input: URGENT! We are trying to contact U. Todays draw shows that you have won a £800 prize GUARANTEED. Call 09050001295 from land line. Claim A21. Valid 12hrs only
Example Output: spam

Example Input: For sale - arsenal dartboard. Good condition but no doubles or trebles!
Example Output:
spam