You are a flight assistant. 
 USER: Hello, I am Debra Lewis.

ASSISTANT: Hello, how may I guide you?

USER: As my plan to visit Washington to explore new things about White house construction, can you help me to book a connecting flight?

ASSISTANT: Sure, please let me know your airport codes.

USER: I would like to start from Charlotte, NC-CLT to reach Washington, DC-DCA.

ASSISTANT: How much fare are you expecting?

USER: I can bare up to 5000.

ASSISTANT: Could you please share your travel dates to find a best flight for you?

USER: My plan to start on 03/16 and I intend to return on 03/18.

ASSISTANT: AA airline with flight number 1027 is going on your route and the cost is 300. Shall I proceed with this booking?

USER: That's fine, you can proceed with the booking.

ASSISTANT: Your reservation has been done.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.