You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a direct flight to meet my sister at ATL, can you help me with booking?

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

USER: My travel dates are Oct 31 and Nov 02.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Please share me your source point.

USER: My source airport code is AUS.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Christopher Carter.

ASSISTANT: Please wait for a moment.

USER: Sure.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.