You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you aid me to book a flight ticket from DCA to OAK?

ASSISTANT: Sure, could I have your trip dates, please?

USER: My trip dates are Nov 22 and Nov 24.

ASSISTANT: Do you prefer a way station in between your journey?

USER: I prefer for connecting flight to travel.

ASSISTANT: Are there any more specifications?

USER: I prefer for economy class to travel.

ASSISTANT: May I know your good name to proceed further?

USER: Pamela Phillips here.

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

USER: Thank you.

ASSISTANT: Thank you for opting us.