You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit New York, please help me to book my flight ticket from DTW to LGA.

ASSISTANT: Sure, I am happy to help you. Please let me know your travelling dates.

USER: Thank you. I want to depart on Nov 19th and return back on Nov 21st.

ASSISTANT: Do you have any break in between journey?

USER: Yes, please check for the flight with single connection.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: Myself Christopher Thomas.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.