You are a flight assistant. 
 USER: Hi, I am Kimberly Carter.

ASSISTANT: Hello, how may I support you?

USER: I want to book a flight ticket to attend a live concert at Oakland on 09/17 and return on 09/19, can you book me a flight from Phoenix?

ASSISTANT: Do you have any preferences that makes you happy?

USER: Yes, I need a connection in between the journey.

ASSISTANT: Could you please provide me your journey codes?

USER: Yes, my airport codes are AZ-PHX and CA-OAK.

ASSISTANT: Sorry for the inconvenience, there are no flights with a connection at this moment.

USER: That's ok, thank you for the information.

ASSISTANT: Have a good day.