You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: Can you help me to book a connecting flight?

ASSISTANT: Sure, may i know your travelling dates?

USER: My travelling dates are Apr 11 and 13.

ASSISTANT: Can I have your airport codes?

USER: My preferred airport codes are DCA and ATL.

ASSISTANT: Do you have any other preferences?

USER: I want to return at afternoon flight.

ASSISTANT: May I know your name?

USER: My name is James Adams.

ASSISTANT: You have a connecting flight 1009 in Hawaiian airlines which returns at 19:00 hours and price 200, Shall I proceed?

USER: Proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.