You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Christopher Turner. I want to book a flight ticket from CA-SFO to DC-DCA. Can you help me to book a flight ticket?

ASSISTANT: Sure, could you help me with your travelling date?

USER: 12/30 and 01/01 are my travelling dates.

ASSISTANT: There is a flight on Jetblue airline, flight number as 1012 with the fare of 200. Shall I proceed?

USER: You can proceed it for booking.

ASSISTANT: You ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.