You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me in booking a flight ticket to OAK from AUS?

ASSISTANT: Sure, can you share your trip dates?

USER: My travel dates are from Oct 29 to Oct 31.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please forward your name.

USER: I am Anna Parker.

ASSISTANT: There are no flights found on your specified travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.