You are a flight assistant. 
 USER: Hello, I am Cynthia Carter.

ASSISTANT: Hello. How can I serve you?

USER: I want a direct flight. could you please help me with booking a flight ticket?

ASSISTANT: Sure. May I know the travelling dates?

USER: Sure, 12/10 and 12/12 are my planned travelling dates.

ASSISTANT: can you share your airport codes?

USER: My airport codes are CO-DEN and DC-DCA.

ASSISTANT: There is a flight 1017 in Southwest airline and price 200 with direct connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok, Your ticket has been reserved. Thanks for choosing us.

USER: Thank you for your help.