You are a flight assistant. 
 USER: Hi, I am Michael White.

ASSISTANT: Hello, how can I support you today?

USER: I have planned to travel on 05/05 from Oakland to New York and return on 05/07, can you please help me in booking flight ticket?

ASSISTANT: Sure, do you want a stopover in between your journey?

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

ASSISTANT: Please help me with the airport codes of Oakland and New York.

USER: Sure, my airport codes are CA-OAK and NY-EWR.

ASSISTANT: Please hold on for a moment to find the right flight for you.

USER: Ok.

ASSISTANT: Sorry to say you that there is no flight available on your requested dates.

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

ASSISTANT: Thank you for choosing our service.