You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at present?

USER: I would like to visit Boston, please help me in booking a ticket from AUS to BOS.

ASSISTANT: Sure, I am here to aid you.

USER: Thank you.

ASSISTANT: May I know your planned dates please?

USER: My planned travel dates are on Oct 12 and Oct 14.

ASSISTANT: Is there any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Can I have your name please?

USER: My name is Thomas Thompson.

ASSISTANT: Do you have any other concerns?

USER: I prefer normal-cost airline.

ASSISTANT: Sorry to say that, no flights are found based on your information.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.