You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Carol Williams, I am planning to visit Washington with my family. can you please help me to make a reservation?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are on 02/02 and 02/04.

ASSISTANT: May I know your source and destination airport codes?

USER: My airport codes are DEN - DCA.

ASSISTANT: We found a AA airline, flight number:1008 and the price is 200.

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.