You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Kimberley Green, I plan for a round trip to Seattle. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your airport code, please?

USER: Sure, it is WA-SEA.

ASSISTANT: Let me know your travelling dates, please?

USER: I like to travel on 11/04 and return on 11/06.

ASSISTANT: Do you have connection limit?

USER: No.

ASSISTANT: Thanks for giving your data, unfortunately there is no flight on your details.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for choosing us.