You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Mary Edwards here. Can you please help me in booikg a flight ticket from DCA to OAK?

ASSISTANT: Sure, may I know your planned travel dates to check for the flight availability?

USER: I would like to travel on Dec 21 and return on Dec 23.

ASSISTANT: Do you have any specifications?

USER: Yes, my departure and return time should be afternoon. Make sure that, I need connecting flight with fare 5000.

ASSISTANT: Here, as per your request I have found a flight with 1 connection and airfare is about 100. Shall I proceed in booking with this flight?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been confirmed for the flight 1023 in Spirit airlines.

USER: Thank you for booking the flight ticket.

ASSISTANT: Thank you for reaching us.