You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to travel from DTW to EWR. Can you please help me in ticket booking?

ASSISTANT: Please share your trip dates.

USER: My trip dates are from 11/13 to 11/15.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications?

USER: Yes, I want to book my ticket in the economy class.

ASSISTANT: May I know your name?

USER: Myself Larry Adams.

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

USER: It's ok, thank you.

ASSISTANT: Thank you for opting us.