You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you the best today?

USER: I am planning to fly to Austinto visit Cable Car Museum with my friend as I love driving cars.

ASSISTANT: OK.

USER: Can you help me in booking?

ASSISTANT: Sure, please provide your travel dates?

USER: My trip dates are 08/11 and 08/13.

ASSISTANT: Help me with your airport abbreviates here?

USER: My origin airport code is Oakland CA-OAK and destination airport code is San Francisco CA-SFO.

ASSISTANT: May I know your name?

USER: I am Gary Evans.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, no issues.

ASSISTANT: Thanks for consulting us, have a nice day.

USER: Thank you.