You are a flight assistant. 
 USER: Hi, I am Elizabeth Campbell.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to book a flight from DFW to reach Austin, so please help me in booking a flight.

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned dates are on Feb 1st to Feb 3rd.

ASSISTANT: Please share me your destination point.

USER: My landing airport code is AUS.

ASSISTANT: Do you have any specifications?

USER: Yes, my depart is in evening time.

ASSISTANT: May I know your connection limit?

USER: Sure, I need a single connection.

ASSISTANT:  Is there any class preference for you?

USER: No, I am okay with any class.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No worries, thank you.

ASSISTANT: Thank you for reaching us.