You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your service?

USER: I would like to book a flight ticket from Oakland to visit Disneyland in Las Vegas, could you please help me to book a business class ticket?

ASSISTANT: Sure, may I know your name please?

USER: I am Daniel King.

ASSISTANT: Please share your source and destination airport codes.

USER: My take off and landing airport codes are OAK and LAS.

ASSISTANT: Kindly mention your planned travelling dates.

USER: I want to depart on Jan 5th and my return date will be on Jan 7th.

ASSISTANT: Do you need a break in between your journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there are no flights found with your essential details.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you for approaching us.