You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to book a flight from AUS at afternoon?

ASSISTANT: Sure, can you share your trip dates?

USER: My travelling dates are Nov 23 and 25.

ASSISTANT: Kindly, mention your destination airport code.

USER: My destination airport code is DCA.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Can you mention your arrival and depart timings?

USER: I am fine at any time.

ASSISTANT: Are there any other specifications?

USER: I prefer connecting flight.

ASSISTANT: Please forward your name.

USER: My name is Amanda Wilson.

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

USER: No issues, thank you for your time.

ASSISTANT: Thank you.