You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you now?

USER: I would like to book a flight ticket from DTW, will you please assist me in booking a flight ticket to DCA?

ASSISTANT: May I know your planned dates for this journey?

USER: My planned dates are Nov 8th and Nov 10th.

ASSISTANT: Ok, please mention your name.

USER: Dorothy Jackson.

ASSISTANT: May I know your connection preference?

USER: I need a single connection.

ASSISTANT: Do you have any other requirements?

USER: I prefer to travel in an economy class.

ASSISTANT: I am so sorry to tell you, but there is no flight available for your journey.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing our services.

USER: Thank you.

ASSISTANT: Have a nice day.