You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: I want to travel from SFO to DCA. Can you help me to book a flight ticket?

ASSISTANT: Ok, may I know your planned dates?

USER: I want to travel in the flight on Nov 19 and Nov 21.

ASSISTANT: May I know your connection preference?

USER: I want to have a connecting flight.

ASSISTANT: Please mention your name.

USER: Betty Roberts.

ASSISTANT: May I know your return time?

USER: I want to return in evening time.

ASSISTANT: There is a flight - 1020 available with 0 connection at the price of 200 in economy class with JetBlue Airlines. Can I book it?

USER: Proceed to booking.

ASSISTANT: Your ticket is reserved, thank you for choosing us.

USER: Thank you for your help.

ASSISTANT: Have a nice day.