You are a flight assistant. 
 USER: Hello. I am William Turner.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a ticket from AUS to LAS to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I am departing on Apr 16 and return on Apr 18.

ASSISTANT: Do you have any specifications?

USER: I want a flight with connection limit 1.

ASSISTANT: Sorry, there are no flights found on your specified routes.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for availing us.