You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Pamela Young. I want to book a ticket from Las Vegas, LAS, can you help me to find a direct flight?

ASSISTANT: Sure, I will be help you. Can you please mention your journey dates?

USER: Sure, I will travel on 02/09 and return on 02/11.

ASSISTANT: How much can you expend for flight ticket?

USER: I can expend 5000.

ASSISTANT: Let me know your destination code.

USER: Destination code is New York, EWR.

ASSISTANT: Just hold on a moment, I will check the availability of flight and revert to you.

USER: Ok.

ASSISTANT: We are sorry to notify that there is no direct flight with your matching details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.