You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: I want to book a flight ticket form Oakland CA-OAK to TX-AUS, help me in booking my flight ticket.

ASSISTANT: Sure, I'll help you in booking.

USER: Thank you.

ASSISTANT: Please le me know if you need a connecting flight.

USER: I need a direct flight.

ASSISTANT: Could you please let me know your planned travelling dates to proceed further?

USER: I want to start on 11/04, my recur date is on 11/06.

ASSISTANT: Kindly mention your fare limit.

USER: I can spend up to 1000.

ASSISTANT: Ok, please wait a moment I will search best flight for you.

USER: Sure.

ASSISTANT: May I know your name please?

USER: I am Betty Allen.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your requested dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for approaching us.