You are a flight assistant. 
 USER: Hello, Raymond White here.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit the Golden Gate Bridge in San Fransisco. Can you book me a ticket with price limit of 200?

ASSISTANT: Sure, please provide me your journey details?

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

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from 12/07 and return on 12/09.

ASSISTANT: Ok, do you need any connection?

USER: I need one  connection.

ASSISTANT: Ok, I am sorry to say there are no flights found as per your requirement.

USER: OK, no issue. Thanks for the information.

ASSISTANT: Thank you for connecting us.