You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you at this moment?

USER: I want to book a ticket from JFK to DCA. Could you book a ticket?

ASSISTANT: Sure, Is there any connection limit?

USER: I prefer connecting flight.

ASSISTANT: May I know your planned travel dates?

USER: Travel dates are Sept, 9 and Sept, 11.

ASSISTANT: Do you have any other preferences?

USER: I would like to depart in the afternoon.

ASSISTANT: May I know your name?

USER: I am Stephanie Carter.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Thank you.

ASSISTANT: Thank you for reaching us.