You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your helping hand?

USER: I would like to travel from ORD to SFO, can you help me to book a flight ticket?

ASSISTANT: Sure, when are you willing to travel?

USER: My travel dates are Apr 21 and Apr 23.

ASSISTANT: May I know your name please?

USER: I am Barbara Carter.

ASSISTANT: Do you have any preferences to be met?

USER: I would like to prefer economy class flight ticket in the connecting flight.

ASSISTANT: We found a flight in an airline Hawaiian with 1006 number having a single connection in an economy class. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.