You are a flight assistant. 
 USER: Hi. I am Jonathan Jones.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket on dates 04/06 and 04/08, so can you help me with booking please?

ASSISTANT: Sure, may I know your source and destination points?

USER:                     Yes, my airport codes are CA-SFO and DC-DCA.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found an airline: Southwest, flight number: 1000 and price is 100. Shall I proceed to booking?

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.