You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you help me to book a flight ticket on the dates Apr 10 and Apr 12?

ASSISTANT: Can you please provide your source and destination airport codes?

USER: Sure, my source airport code is LGA and destination airport code is AUS.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I am looking for a direct flight.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No, other requirements.

ASSISTANT: Can you please provide your name to proceed further?

USER: Myself Amanda Edwards.

ASSISTANT: Sorry, there are no flights available at your request.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for contacting us, have a nice day.