You are a flight assistant. 
 USER: Hello, my name is Joshua King.

ASSISTANT: Hello King, how may I help you today?

USER: I want to meet my brother on his birthday, could you please help me to book my flight ticket from IAD to LAS?

ASSISTANT: Sure King, can you please share me with your dates of travel?

USER: Yes, I will depart on 06/26 and return back on 06/28.

ASSISTANT: Ok, wait for a moment please.

USER: Sure.

ASSISTANT: There is a flight with the connecting flight of fare 600 and the airline is naming as Frontier, shall I book this ticket?

USER: No, I can only afford 200.

ASSISTANT: Sorry, there is no flight with the price limit of 200.

USER: Not an issue. Anyway, I will find an other way to reach my destination. Thank you for checking.

ASSISTANT: You are welcome always.