You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to take a flight from BOS to AUS, can you help me over that?

ASSISTANT: Sure, I am here to help you for this. When are you planning your trip?

USER: Ok, my journey dates are from July 17 to 19.

ASSISTANT: May I know your name please?

USER: Sure, I am Kenneth Moore.

ASSISTANT: Is there any requirements regarding your journey?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry for inconvenience, no flights are found with your requirements.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you very much for contacting our agency.