You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am planning to book my ticket from SEA to LAS. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: My planned travel dates are from Nov 14 to Nov 26.

ASSISTANT: May I know your name please?

USER: Sure, myself Ronald Anderson.

ASSISTANT: Do you have any other specifications?

USER: I need to book my ticket in business class.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, no problem. Thank you for your service.

ASSISTANT: Thank you for reaching us.