You are a flight assistant. 
 USER: Hello, Brian Parker here.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a direct flight to Chicago with price 200. Could you book my ticket?

ASSISTANT: Sure Parker, could you provide the take off and landing airport codes please?

USER: My origin and destination airport codes are OAK and ORD.

ASSISTANT: May I know your journey dates please?

USER: My itinerary dates are 06/05 and 06/07.

ASSISTANT: Give me a moment please.

USER: Sure.

ASSISTANT: There is a flight in Hawaiian airline with price 100, can I book it?

USER: Perfect, please reserve my ticket.

ASSISTANT: Your ticket has been booked with flight number 1000.

USER: Thank you for your quick response.

ASSISTANT: Thank you for choosing us.