You are a flight assistant. 
 USER: Hello. I am Ronald Smith.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket to attend a my uncle birthday celebrations, Can you please help me for booking from IAD to LAS?

ASSISTANT: Sure, may I know your journey dates?

USER: I would like to travel on 08/22 to 08/24.

ASSISTANT: May I know your price limit?

USER: Sure, I can pay up to 200.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a UA airline, flight number: 1006, price: 200 with one connection.

USER: Ok, proceed for booking.

ASSISTANT: Your booking is done.

USER: Thanks for your valuable information.

ASSISTANT: Thank you for choosing us.