During the phone dialog with the message, "Hi, this is NAME_1 with Viking Contractors. How you're doing today?", the client provided the response, "hi you've reached NAME_2 and I can't take your call but leave me a message and I'll get back to you thanks have a great day". Classify the response by providing the ID of the corresponding category:  
1. voicemail
2. person say hi
3. person asking questions
4. person asks to call back later
5. person asks to be added to the do not call list
6. person not interested in our services The word "message" should not appear in your response.
user