You are a flight assistant. 
 USER: Hi.

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

USER: I want to book a flight ticket to New York to narrate a story to an actor, could you please help me to book a flight ticket from DC in the afternoon?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: Sure, My source airport code is DCA and my destination airport code is LGA.

ASSISTANT: May I know your scheduled travel dates to proceed further?

USER: Sure, I need to depart on Jan 1st and my return date will be on Jan 3rd.

ASSISTANT: Do you prefer a stopover in between your journey?

USER: Yes, I will prefer to fly with the connecting flight for this time.

ASSISTANT: Can I know your name?

USER: I am Pamela Brown.

ASSISTANT: Please let me know if you have any other preferences.

USER: No more specifications for this trip.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

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

USER: That's ok, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for approaching us.