You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am looking for a flight from SFO to DCA, can you please help me in booking?

ASSISTANT: May I know your trip dates?

USER: My travelling dates are Nov 10 and Nov 12.

ASSISTANT: Do you prefer any specifications?

USER: I prefer economy class.

ASSISTANT: May I know your name?

USER: Sure, my name is Deborah Moore.

ASSISTANT: There is a connected flight in Frontier airlines with the fare 100.

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Thank you.