You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Andrew Davis. I am planning to book a ticket from DCA to OAK. Can you please help me out to book a ticket?

ASSISTANT: Sure, on which dates would you like me to book a flight ticket for you?

USER: I would like to travel on Dec 01 and return back on Dec 03.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: I am looking for a normal cost flight.

ASSISTANT: An airline AA of flight number 1021 having a halt with normal cost. Shall I proceed for booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.