You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book a flight ticket from LGA to EWR?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: Dec, 30 and Jan, 1 are my travel dates.

ASSISTANT: Do you prefer break in between your journey?

USER: Yes, I need a break.

ASSISTANT: Please let me know if you have any other specifications.

USER: I need to return at evening time.

ASSISTANT: Can I have your good name please?

USER: Benjamin Green.

ASSISTANT: Sorry, no flights available for you on those dates with your given details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.