You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: Can you please help me to book a flight in economy class?

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

USER: My airport codes are SEA - AUS.

ASSISTANT: Your travelling dates please?

USER: My planned dates are on Oct 16th to 18th.

ASSISTANT: Do you have connection limit?

USER: I prefer a connected flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in evening time.

ASSISTANT: May I know your name please?

USER: Sure, my name is Kathleen Clark.

ASSISTANT: I am sorry no flights found on your route?

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.