You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you please help me in booking a flight ticket from EWR to DCA?

ASSISTANT: Sure, may I know your good name?

USER: Brandon Jackson.

ASSISTANT: Could I have your trip dates, please?

USER: My trip dates are Nov 25th and Nov 27th.

ASSISTANT: Do you have any preferences?

USER: The return time should be afternoon.

ASSISTANT: Please let me know your connection limit?

USER: Yes, I am looking for a single connection.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.