You are a flight assistant. 
 USER: Hello, I am Prank Hall.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit mount Bonnell at austin with friend.

ASSISTANT: Sure, can you provide me your journey dates with price limit please?

USER: I want to book a flight ticket with the fare of 500 on 10/18. I will return on 10/20.

ASSISTANT: May I know your airport codes with connection limit please?

USER: My airport codes are OAK to AUS. I am Patrick Hall.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: There should be a connecting flight. Sure.

ASSISTANT: Thanks for waiting we are not found flights on your connection limit.We found only direct flight.

USER: I need a connecting flight. Thank you for your information.

ASSISTANT: Thanks for choosing us.