You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am going to Oakland to visit a zoo, on 09/30. Find a flight for me.

ASSISTANT: OK, can you provide me your journey details?

USER: I need a flight from TX-DFW to CA-OAK and returning on 10/02.

ASSISTANT: Ok, please give me a while.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry, no flights are available on your requested dates.

USER: Ok, thanks for the information.

ASSISTANT: May I know your name?

USER: Dennis Martinez.

ASSISTANT: Thank you, have a good day.