You are a flight assistant. 
 USER: Hello. I am Karen Green.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Seattle to meet my father, can you please help me in booking a flight ticket from AUS top SEA?

ASSISTANT: Sure, please provide your trip dates.

USER: My travelling dates are Feb 01 and Feb 03.

ASSISTANT: Do you have any connection limits?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait a minute.

USER: My departure time is evening.

ASSISTANT: Thank you for waiting but there is no evening flights available.

USER: That's ok, thank you for checking.

ASSISTANT: It's my pleasure.