You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am William Young. I want to book a flight ticket to celebrate Music Festival in San Francisco, could you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to fly on 01/23 and return on 01/25.

ASSISTANT: Please share your airport codes?

USER: My source is Chicago, IL - ORD and destination code is CA - SFO.

ASSISTANT: We found a flight 1004 in Hawaiian airline the price is 100 with one halt. Shall I proceed with booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed. Thank you for opting us.

USER: Thank you.