You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am George Baker. I need to book a flight ticket with single stop over, Can you help me for booking a flight ticket please?

ASSISTANT: Sure, I am happy to help. Can you please provide me your travelling dates?

USER: I would like to travel on 08/02 to 08/04.

ASSISTANT: Ok, may I know your airport codes?

USER: My source point is TX-AUS to destination point is CA-SFO.

ASSISTANT: Do you have any other specifications?

USER: I need price limit with in 500.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Sorry there is no flight found on your connection limit.

USER: Ok, no problem.

ASSISTANT: Thanks for approaching us.

USER: Thanks for your information.

ASSISTANT: Have a great day.