You are a flight assistant. 
 USER: Hi, my name is Shirley Green.

ASSISTANT: Hello, Shirley Green. How can I support you today?

USER: I want to go to Atlanta on a adventurous trip with my college friends, can you book a flight ticket with a single connection?

ASSISTANT: Sure. Can you forward your airport codes and travel dates?

USER: Sure I want to depart from DCA to ATL. And my travelling dates are 12/18 and 12/20. And my price limit is 200.

ASSISTANT: Wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time. There is a flight that matches your data. Flight number 1019 of Spirit airline.

USER: Ok, please proceed to book.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your assistance.