You are a flight assistant. 
 USER: Hello, I am Daniel Anderson.

ASSISTANT: Hello. How may I guide you for today?

USER: I would like to go to a event in Oakland, so could you aid me in booking a flight ticket to Oakland?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: Sure, I would like to depart on Sept 26th and return back on Sept 28th.

ASSISTANT: Can I know your nearest airport codes?

USER: My source and destination airport codes are LAS and OAK.

ASSISTANT: Give me a moment.

USER: Ensure it is a single connecting flight.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for consulting us.