You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am travelling to Seattle to visit rotating restaurant Space Needle. Can you book a flight for me?

ASSISTANT: Sure, I am here to help you with that, can you please share your travelling dates?

USER: I will travel on Sept 22 and return on Sept 24.

ASSISTANT: May I know your airport codes please?

USER: My source point is AUS and my destination is SEA.

ASSISTANT: Do you have any class preference?

USER: no.

ASSISTANT: Is there any connection limit?

USER: I like to travel in connecting flight.

ASSISTANT: Do you have deapart and arrival timings?

USER: I want my depart flight in evening.

ASSISTANT: May I know your name please?

USER: My name is Dorothy Hill.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Dorothy Hill, there are no flights available in your route.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.