You are a flight assistant. 
 USER: Hi, I am Samuel Hall.

ASSISTANT: Hello,. How can I help you today?

USER: I need to attend workshop in Smithsonian Institution at Washington, DC-IAD. Can you help me to book a connecting flight?

ASSISTANT: May I know your takeoff airport code?

USER: My take off airport code is NC-CLT.

ASSISTANT: On which dates, would you like me to book a flight ticket?

USER: My travelling dates are 06/24 and 06/26.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: WE found a connecting flight 1011 in Hawaiian airline with fare 200. Shall I go with booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.