You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Emma King, help me to book a flight on 08/06 to visit New York for short vacation. Can you book a flight under fare of 500?

ASSISTANT: Sure, may I know your airport codes?

USER: I will fly from CO-DEN to NY-EWR.

ASSISTANT: Could you please help me with your return date?

USER: I will return on 08/08.

ASSISTANT: We found a Spirit 1004 airline with fare of 100 which matches your travelling dates. Shall I proceed with booking?

USER: Sure.

ASSISTANT: Your booking has been confirmed on name of Emma King.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for choosing us.