You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you please make a reservation with the name of Brandon Wilson?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are on 28th and 30th of August.

ASSISTANT: Do you have any limit on number of connections?

USER: No, I need a direct flight in my journey.

ASSISTANT: Let me know your nearest airport codes, please.

USER: My airport codes are, LAS to OAK.

ASSISTANT: May I know your other specifications for your journey?

USER: My return flight time should be in the afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, we have not found any flights running on your desired routes.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.