You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: Can you please help me in flight ticket booking process from DTW to SFO?

ASSISTANT: Sure, may I know your travelling dates please?

USER: Thank you for your response, I want to take off on Dec 10 and book my return ticket also on Dec 12.

ASSISTANT: Do you need a lay by in between the journey?

USER: I will prefer 1 break in between my journey.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Kenneth King.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: There are no flights found on your requested dates.

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.